Nothing beats the satisfaction of rolling up your sleeves and giving your pride-and-joy a proper hand wash—until you realize you’ve sloshed half the rinse bucket across the driveway and your back is screaming from dragging that heavy pail around the car. Enter the car wash kit with bucket dolly: a marriage of cleaning chemistry, smart accessories, and wheeled convenience that turns a Saturday chore into a smooth, swirl-free ritual. In this guide we’ll unpack everything you need to know before investing in a kit, from wheel-bearing ratings to the nuanced difference between grit guards and dirt traps, so you can glide—literally—through your next detail session.
Why a Bucket Dolly Matters More Than You Think
Top 10 Car Wash Kit
Detailed Product Reviews
1. AUTODECO 42Pcs Car Wash Detailing Kit Cleaning Kits with Foam Gun Sprayer Wash Brush with Long Handle Collapsible Bucket Large Wash Mitt Towels Complete Interior Exterior Car Washing Supply Set Blue
Overview:
AUTODECO’s 42-piece blue arsenal arrives in a single zip-bag, turning driveway into detailing bay. From a collapsible 5-gallon bucket to a snow shovel, the set covers exterior foam-down, interior dusting, wheel scrubbing and even winter glass de-icing—no separate purchases required.
What Makes It Stand Out:
The low-pressure foam gun’s on-handle dial lets you throttle soap thickness without running back to the tap, while the 180° swivel mop/squeegee combo reaches roof and glass in one pass. A color-coded brush suite (five detailing, three wire, one tire, one hub) prevents cross-contamination, and the 100 ml spray bottle is pre-marked for quick detailer or APC mixes.
Value for Money:
At $44.19 you’re paying barely $1 per tool; comparable foam guns alone cost $25. Throw in an aluminium-handle mop, microfiber wash mitt, four towels, five applicator pads and a collapsible bucket and the math borders on theft—perfect for first-time owners or apartment dwellers with limited storage.
Strengths and Weaknesses:
Pros: astonishing breadth, foam gun beats cheap hose attachments, bucket folds to 2 in., brushes are soft yet dense, everything fits in the supplied carry bag.
Cons: low-pressure gun needs domestic spigot pressure to foam well, telescopic mop can loosen if overtightened, towels are 220 gsm so upgrade for final wipe, no grit guard included.
Bottom Line:
If you want a one-click starter kit that tackles Sunday washes and Saturday details alike, AUTODECO’s 42-piece bundle is the easiest under-$50 win on Amazon. Add a $10 grit guard and you’re set for years of swirl-free shine.
2. Armor All Car Wash and Car Cleaner Kit by Armor All, Includes Glass Wipes, Car Wash & Wax Concentrate, Protectant Spray and Tire Foam
Overview:
Armor All’s four-piece Car Wash & Cleaner Kit bundles the brand’s most popular formulas into one affordable box, giving driveway detailers everything they need for a Saturday-morning shine. Inside you get 10 oz Original Protectant, 16 oz Ultra Shine Wash & Wax, 20 oz Tire Foam, and 25 Glass Wipes—enough product to clean, shine and protect the average sedan twice over.
What Makes It Stand Out:
The kit is curated, not random: every item is a best-seller on its own, so you skip the guesswork. The Wash & Wax is a two-in-one that actually leaves a thin polymer film, cutting a full step from the routine, while the Tire Foam clings long enough to lift browning and brake dust without scrubbing.
Value for Money:
At $14.97 the bundle lands just under $3.75 per product—cheaper than buying each bottle separately at the auto-parts store, and you still get the convenience of pre-matched formulas plus free wipes.
Strengths and Weaknesses:
Strengths: low entry cost, recognizable brand, pleasant scent, safe on all factory finishes, and the protectant leaves a matte—not greasy—dash. Weaknesses: wash wax is light-duty (won’t replace a real sealant), glass wipes can streak if used in hot sun, and Tire Foam sling is possible if you don’t let it dwell five minutes.
Bottom Line:
For anyone who wants a quick, respectable shine without investing in buckets of specialty chemicals, this kit is a no-brainer starter set that actually works.
3. Poejeh 8-Piece Car Interior Cleaning Kit - 160g Jarred Gel (128% More Than 70g), Boars Hair Brushes, High-Density Microfiber Cloth, Ultra-Soft Duster - for Cars, Trucks
Overview:
Poejeh’s 8-piece kit bundles every interior-cleaning tool a driver actually needs into one zippered pouch. The star is a 160 g jar of lemon-scented putty that presses into vents and cup-holders, lifting crumbs and pet hair in seconds. Three natural-boar-hair brushes, an oversized microfiber duster, a 340 gsm towel and a reusable storage bag round out the set—no sprays, no batteries, no waste.
What Makes It Stand Out:
The 160 g gel gives you 28 % more uses than the 70 g pouches that dominate Amazon, yet the whole kit still costs less than a single interior detail at a car wash. Boar bristles (not nylon) are graded by softness so you can scrub chrome grilles, leather dash stitching or piano-black trim without swapping kits. A jarred gel keeps the goo dust-free for months; bagged rivals dry out in weeks.
Value for Money:
At $8.99 you’re paying roughly $1.12 per tool—cheaper than a fast-food combo and reusable hundreds of times. Comparable boar-hair brushes alone sell for $4-5 each; here you get three plus a jar of gel that replaces disposable wipes and canned air.
Strengths and Weaknesses:
- 100 % scratch-free on suede, piano-black and nav screens
- Gel works in 5 °F–140 °F temps; doesn’t drip like liquids
- Towel edge is silk-banded—zero lint on glass
– Gel is single-color; hard to see when it’s time to replace
– Brushes retain water; air-dry overnight to prevent mildew
Bottom Line:
If you want showroom-grade interiors without a closet full of chemicals, this is the best sub-$10 kit available. Keep one in the glovebox and cancel the $30 detail shop upsell forever.
4. Armor All Car Wash Kit, Includes Car Wash Soap, Wash Mitt & Microfiber Towel (3 Piece Kit)
Overview:
Armor All’s 3-piece kit bundles a 64-oz bottle of Ultra Shine Wash & Wax, a Noodle Tech microfiber wash mitt, and a 22”×30” microfiber drying towel into one convenient package pitched at weekend detailers who want a quick, single-stop solution. The wash soap contains real carnauba wax, promising cleaning and protection in one step, while the noodle-style mitt and waffle-weave towel are designed to trap dirt and water without scratching paint.
What Makes It Stand Out:
The synergy of matched components is the selling point: you’re not mixing random brands or wondering if your mitt is paint-safe. The “wash & wax” formula saves time by layering a thin coat of carnauba while you rinse, and the oversized towel absorbs roughly two gallons of water before needing a wring—handy for SUVs and trucks.
Value for Money:
At $23.28 the kit undercuts buying quality equivalents separately (≈$8 mitt, ≈$10 towel, ≈$12-15 for a comparable soap). You’re essentially getting the towel free, making it a budget-friendly starter set or gift.
Strengths and Weaknesses:
Pros: generous soap volume (good for 20+ washes), gentle noodle mitt lifts grit, towel leaves virtually no streaks, pleasant citrus scent.
Cons: wax protection lasts only 1-2 weeks; highly sudsy formula requires extra rinsing to avoid film; mitt cuff is loose on smaller hands; towel edges are merely stitched, not silk-banded, so long-term durability is questionable.
Bottom Line:
For casual cleaners who want an all-in-one kit without premium-brand pricing, Armor All’s bundle delivers solid results and respectable gear. Serious enthusiasts will still need dedicated sealants, but for quick weekend wipes this kit earns shelf space.
5. Chemical Guys Clean and Shine Car Wash Starter Kit - 7-Piece Set with 3 x 16 oz Car Detailing Chemicals, Safe for Cars, Trucks, SUVs, Motorcycles, Jeeps, RVs, and More
Overview: Chemical Guys’ Clean & Shine Starter Kit bundles seven pro-level detailing essentials into one $39.99 box. You get 16 oz bottles of Citrus Wash & Gloss, Total Interior cleaner, Diablo Wheel Gel, plus four accessories—foam-gun attachment, microfiber mitt, towel, and applicator—everything needed to turn a driveway into a mini-detail shop.
What Makes It Stand Out: The trio of specialized chemistries covers the entire vehicle, not just paint. Citrus Wash & Gloss produces avalanche-thick foam that suspends grit before it scratches, while built-in gloss enhancers leave a just-waxed glow in a single step. Total Interior is surfactant-based, so it lifts body oils and coffee rings without leaving the greasy silicone film most “one-step” dressings do. Diablo’s sprayable gel clings long enough to dissolve metallic brake dust on contact, cutting scrubbing time in half.
Value for Money: Individually the three chemicals list for ~$45; toss in the accessories and you’re saving 30 % while gaining a turnkey wash system. For weekend washers it’s a low-risk taste of professional chemistry without boutique-bottle sticker shock.
Strengths and Weaknesses:
Pros: High-foam shampoo safe for ceramic coatings; interior cleaner leaves true matte OEM finish; wheel gel works on chrome, powder-coat, and wraps.
Cons: 16 oz bottles empty quickly on large trucks/RVs; foam gun fits only standard garden-hose threads; scents are strong—citrus and grape may not be for everyone.
Bottom Line: If you want noticeable shine and interior freshness without hoarding a dozen specialty bottles, this kit punches well above its price. Perfect for first-timers and space-strapped enthusiasts who need pro results on a budget.
6. 62” Car Wash Brush Kit Mitt Mop Sponge with Long Handle, 1 Chenille Scratch-Free Replacement Head, Windshield Window Squeegee,Car Duster,Car Detailing Brushes,Tower,Car Cleaning Kit for Cars RV Truck
Overview:
NIKCOSMK’s 17-piece kit turns a Saturday car-wash into a one-box operation. Four screw-together aluminium poles extend to 62”, letting you suds the roof of a lifted F-250 or dust the ceiling fan without a stepladder. Two plush chenille mop heads, a squeegee, five detailing brushes, wheel brush, wash mitt, towel and carry bag all nest inside a lightweight organizer that fits a trunk cubby.
What Makes It Stand Out:
The modular pole system is the star—thread on the mop for paint, the squeegee for glass, or the duster for dash vents in seconds. Every head swaps tool-free, so you’re never walking back to the bucket. Chenille covers are machine-washable and double-stitched, outlasting cheaper glued pads.
Value for Money:
At $25.99 you’re paying roughly $1.50 per tool; comparable name-brand chenille refills alone sell for $9 apiece. Factor in the four-stage handle (often a $20 separate purchase) and the kit effectively pays for itself after two washes.
Strengths and Weaknesses:
Pros: Genuine scratch-free microfiber; collapses to 23” for compact storage; includes niche extras like lug-nut brushes.
Cons: Aluminium poles flex when fully extended—press too hard and the head skitters; plastic threads can cross-strip if overtightened; no flow-through option for hose-fed rinsing.
Bottom Line:
For apartment dwellers, RV owners or anyone who hates juggling a dozen separate tools, this kit delivers pro-level reach and softness at a bargain-bin price. Just treat the handle with kid gloves and it will outlast your wax supply.
7. AUTODECO 22Pcs Car Wash Cleaning Tools Kit Car Detailing Set with Blue Canvas Bag Collapsible Bucket Wash Mitt Sponge Towels Tire Brush Window Scraper Duster Complete Interior Car Care Kit
Overview:
AUTODECO’s 22-piece kit arrives in a compact 11.8”×9”×4” blue canvas bag and unfolds into a complete mobile car-wash station. The collapsible 5-gallon bucket, extra-large chenille mitt, twin microfiber towels, and assortment of brushes, scrapers, and wax pads cover exterior paint, wheels, glass, and interior vents—enough gear to detail a sedan, motorcycle, or RV without hunting for extra tools.
What Makes It Stand Out:
The fold-flat bucket shrinks to the size of a frisbee, yet holds 20 L—perfect for apartment dwellers or trunk storage. The oversized wash mitt is double-stitched, lint-free, and lined with waterproof fabric to keep hands dry, while the tire brush’s contoured handle reaches inside alloy spokes without scraping rims. A vent duster and stone hook—items rarely bundled—complete the “surprise-and-delight” factor.
Value for Money:
At $26.79, the kit averages $1.22 per tool; comparable collapsible buckets alone cost $12–$15. You’re essentially getting 21 bonus microfiber and brush accessories for the price of two lattes, backed by lifetime email support.
Strengths and Weaknesses:
Pros: space-saving bucket, scratch-safe materials, comprehensive selection, gift-ready packaging.
Cons: towels are serviceable but thin; no grit guard for the bucket; storage bag lacks internal dividers, so small pieces can wander.
Bottom Line:
For budget-minded enthusiasts or first-time owners, this is the easiest, cheapest way to go from zero to full detail kit in one click. Experienced pros will still want thicker towels and a grit guard, but for everyone else it’s a no-brainer buy.
8. Chemical Guys Car Wash Kit 14-Pc Arsenal Builder - With Foam Blaster, Wash Bucket, Towels, Applicators, and 16 oz Soaps, Waxes, and Cleaners - Complete Auto Detailing Gift Set, Works with Garden Hose
Overview:
The Chemical Guys Arsenal Builder 14-Pc Car Wash Kit is a garden-hose-compatible detailing starter set that bundles the brand’s most popular soaps, waxes, and accessories into one bright-orange bucket. From the Honeydew Snow Foam to the Butter Wet Wax, every 16 oz bottle is formulated for hobbyists who want pro-level shine without investing in a pressure washer.
What Makes It Stand Out:
The included Foam Blaster is the star—simply screw it onto any standard spigot and it pulls the perfect 10:1 dilution of Honeydew Snow Foam, laying down a blanket of lubricating suds that dramatically cuts down on swirl marks. Add the grit-guard-inserted Cyclone Dirt Trap and you have a scratch-safe wash system that normally costs twice as much when pieced together separately.
Value for Money:
At $124.99 you’re getting roughly $180 worth of Chemical Guys retail SKUs, plus the exclusive foam gun. If you already own microfiber towels the savings shrink, but first-timers save money, time, and multiple shipping fees.
Strengths and Weaknesses:
Pros: garden-hose foam gun actually works; pH-balanced soaps are gentle on wax; sweet scents make weekend washing fun; clear labeling keeps beginners from grabbing the wrong bottle.
Cons: 16 oz sizes run out fast on large trucks/SUVs; foam gun plastic feels light-duty; no interior APC or leather cleaner; bucket lid not included.
Bottom Line:
For driveway detailers who want showroom results without a pressure washer, the Arsenal Builder is the easiest one-click route from dusty to glossy—just budget for refill bottles once the honeymoon suds are gone.
9. Wontolf 62” Car Wash Brush with Long Handle Chenille Microfiber Car Wash Mop Mitt Kit Car Detailing Brush Cleaning Kit Window Squeegee Car Duster Drying Towels Tire Brush for Cars RV Truck Boat
Overview:
The Wontolf 62’’ Car Wash Brush Kit is a 7-in-1 detailing arsenal that promises to turn driveway drudgery into a quick, scratch-free spa day for any car, RV, truck or boat. Four snap-together aluminum poles extend from hand-held to 5-ft so you can reach roof, windshield and lower rocker panels without the yoga poses. Two machine-washable chenille mitts, a squeegee, wheel brush, microfiber duster and thick drying towel complete the set—everything nests in the box for tidy storage.
What Makes It Stand Out:
Modularity is the star: twist-lock poles let you switch between mitt, duster, squeegee or brush in seconds, eliminating the bucket full of mismatched tools that usually clutter garages. The 62’’ squeegee blade is a segment-first at this price, turning rinse-water into a streak-free finish in one pass. All fabrics are lint-free, 1200 GSM microfiber—safe on ceramic coatings, PPF or matte wraps.
Value for Money:
At $24.99 you’re paying roughly $3.50 per tool; comparable single long-handle mitts alone sell for $18. Throw in the squeegee, wheel brush and plush towel and the kit basically pays for itself after two home washes versus a $15 drive-thru detail.
Strengths and Weaknesses:
Pros: lightweight poles (1.1 lb total), scratch-free fabrics, tool-free assembly, machine-washable mitts, indoor/outdoor versatility.
Cons: aluminum joints can loosen if overtightened; squeegee blade may flip in high winds; mitts absorb a ton of water so expect a few extra wrings.
Bottom Line:
For weekend washers who want pro-level reach and softness without pro-level cost, the Wontolf kit is an easy add-to-cart. It won’t replace a pressure washer for caked-on mud, but it will keep paint gleaming and your wallet intact.
10. THINKWORK Car Wash Kit, Car Washing Brush with Long Handle, Extendable Car Wash Brush Mop with 2-in-1 Windshield Squeegee and 9Pcs Detailing Brush, Gray Car Detailing Kit Gift for Men
Overview:
THINKWORK’s 25-piece gray wash kit turns driveway detailing into a mini pro-shop. A stainless-steel pole extends to swipe SUV roofs without a step stool, while a scratch-free mop head flips to a rubber squeegee for glass. Add 10 specialty interior brushes, wash mitt, sponges, microfiber towel, and a carry bag—everything short of a water hose is included.
What Makes It Stand Out:
The 2-in-1 mop/squeegee combo saves constant tool swaps, and the pole’s four snap-on sections reach 62” yet collapse to 18” for trunk storage. Five black nylon detailing brushes are sized for louvers, stitching, and emblem crevices—items normally bought separately. A six-month warranty and gender-neutral gray palette make it gift-ready for any driver.
Value for Money:
At $31.99 you’re paying about $1.25 per item; comparable poles alone retail for $20, and the included tire, hub, and vent brushes tally another $25. For enthusiasts who hand-wash monthly, the kit pays for itself in two uses versus paid detailing.
Strengths and Weaknesses:
Pros:
- Lightweight stainless pole doesn’t sag when wet
- Lint-free mop covers are machine-washable
- Dedicated tire & wheel brushes cut scrub time
Cons:
- Pole sections can loosen if twisted clockwise while washing
- No soap dispenser or foam cannon in the box
- Storage bag fits gear tightly, making zipper prone to snagging
Bottom Line:
If you want an all-in-one starter set that reaches the roof of a crew-cab and dives into air vents, the THINKWORK kit is a budget no-brainer. Serious detailers may later upgrade individual pieces, but for most owners this $32 box delivers professional results without professional invoices.
Washing a car isn’t just about soap; it’s about ergonomics and contamination control. A bucket dolly lets you keep your rinse water within arm’s reach without bending, lifting, or shuffling a 4-gallon load across uneven pavement. The result? Fewer spills, less fatigue, and a lower chance of accidentally kicking the bucket (and scratching the paint) while circling the vehicle.
Anatomy of a Quality Car Wash Kit
Beyond the obvious shampoo and microfiber mitt, a pro-grade kit bundles chemical balance, mechanical agitation tools, and containment systems. Think of it as a mobile clean room: every component is selected to remove, isolate, or neutralize grime before it can mar the clear coat.
Bucket Basics: Size, Shape, and Material
A 5-gallon (19 L) food-grade HDPE pail is the sweet spot—tall enough to submerge a mitt, short enough to fit under a lowered bumper. Tapered walls prevent swirl-inducing “mitt slap,” while a slightly thicker rim resists cracking when you seat a gamma-seal lid for storage.
Dolly Dynamics: Wheels, Bearings, and Brakes
Look for non-marring polyurethane casters rated at least 75 lb (34 kg) apiece, with two locking brakes to park on slanted driveways. Sealed ball bearings keep rolling smooth even after seasonal temperature swings, and a 360° swivel plate prevents jack-knifing around tight wheel wells.
Grit Guards vs. Dirt Traps: Containment Explained
Grit guards sit horizontally, creating a one-way barrier; dirt traps use conical funnels that flex downward. Both isolate particulates, but traps allow fuller mitt compression—handy when you’re using ultra-plush 1200-gsm microfiber that sops up half the bucket.
Soap Chemistry: pH, Foam, and Lubricity
A pH-neutral shampoo (6.5–7.5) preserves LSP (last-step product) layers like wax or SiO₂ sealant. High-foaming surfactants encapsulate dirt, while lubricating polymers provide that “slippery” feel that prevents marring. Avoid gloss-enhancers in the soap if you plan to clay or polish afterward—they can mask defects.
Microfiber vs. Lambswool: Mitt Material Science
Microfiber loops scoop particles into their asterisk-shaped fibers, whereas lambswool’s natural lanolin offers inherent lubricity. For ceramic-coated cars, microfiber is safer because wool can leave lint that interferes with coating slickness.
Wheels First: Controlling Cross-Contamination
Always start with wheels and tires, using a dedicated bucket or a removable inner bucket. Brake dust contains metallic shards; introducing them to the paint bucket is like washing with sandpaper. A dolly with a secondary “wheel” insert keeps chemicals segregated without extra floor space.
Two-Bucket Method on Wheels
The classic rinse-wash duo becomes a rolling workstation: rinse bucket on the dolly, wash bucket stationary at the front of the car. Push the dolly as you panel-wash, dunking the mitt in the stationary bucket only when you need fresh suds. You’ll cut mitt trips by 30 % and reduce water splash.
Water-Saving Tricks for the Eco-Conscious Detailer
Install a cheap RV water pump and battery on the dolly to recirculate rinse water through a 20-micron filter bag. You’ll use 2 gallons instead of 8, and the filtered water is clean enough for wheel-well pre-rinsing. Pair with a low-pressure foam cannon (under 60 psi) to pre-soak without a hose.
Storage & Portability: Folding Handles and Stackability
Look for dollies with telescopic or folding handles that tuck under the bucket when you hoist it into the trunk. Stackable kits nest the dolly plate inside a second bucket, cutting storage height to 12 inches—perfect for condo closets.
Maintenance Tips to Extend Kit Life
Rinse casters weekly to remove soap film that attracts grit. Hit axles with a PTFE-based spray, not WD-40 (it attracts dust). Once a month, soak the bucket in a 1:10 vinegar solution to dissolve calcium film from hard water, then air-dry upside-down to prevent biofilm.
Budget vs. Premium: Where Extra Dollars Go
Premium kits swap commodity plastic for UV-stabilized resin, stainless-steel axles, and laser-etched grit guards that won’t flex. You also get concentrated soaps with higher active-surfactant content (25 % vs. 8 %), meaning one 16 oz bottle lasts 40 washes instead of 12.
Common Buyer Mistakes to Avoid
- Buying a 3-gallon dolly because it’s “cute”—you’ll outgrow it on the first SUV.
- Ignoring caster diameter: small 2” wheels snag on expansion joints.
- Overlooking bucket wall thickness: sub-70 mil plastic splits when you step on the dolly brake.
- Mixing citrus-based APC with aluminum wheel dollies—oxidation city.
Seasonal Considerations: Winterizing Your Setup
Before the first freeze, run RV antifreeze (propylene glycol) through the dolly’s internal filter lines to prevent micro-cracks. Store shampoo bottles indoors; surfactants can separate and gel below 32 °F. Swap polyurethane casters for softer rubber ones if you roll across salted garage floors—PU becomes brittle in sub-zero temps.
Frequently Asked Questions
1. Can I retrofit my existing 5-gallon pail to a dolly, or do I need a proprietary bucket?
Most dollies use a standard 12-inch diameter pail; just ensure the base plate has adjustable screws to grip buckets with slight taper variations.
2. How much weight can a typical bucket dolly handle when full?
A filled 5-gallon bucket weighs ~42 lb; quality dollies are rated 250–300 lb total, so you can stack a second bucket or tools without worry.
3. Will rolling the dolly across my epoxy-coated garage floor leave scuff marks?
Choose non-marking polyurethane casters with a Shore-A hardness of 85 or less; they glide silently and won’t ghost the surface.
4. Do I need separate dollies for rinse and wash buckets?
One rolling rinse bucket is usually enough; park the wash bucket at a central “suds station” to minimize cross-traffic and spills.
5. Can I use the dolly for other detailing tasks like hauling a wet/dry vac?
Absolutely—swap the bucket for a universal tool plate (most brands sell one) and strap down extractors or polishers up to the dolly’s weight limit.
6. Is a gamma-seal lid worthwhile if I store my kit in a hot shed?
Yes; it creates an airtight seal that prevents water evaporation and keeps humidity from degrading your microfiber mitts between washes.
7. How often should I replace the grit guard?
Inspect every six months; if the fins are bent or the plastic has stress-whitened, replace it—compromised geometry lets grit float back up.
8. Are battery-powered dollies with motorized wheels overkill for home use?
For most driveways, yes—they add cost and weight. Manual dollies roll easily once bearings are lubed; save the motors for mobile detailers doing 10 cars a day.
9. Can I run warm water through the bucket to boost soap suds?
Warm (not hot) water under 100 °F increases foam and cuts grease, but avoid boiling temps—they can warp cheaper HDPE buckets over time.
10. What’s the quickest way to disinfect a bucket that’s grown mildew?
Fill with 1 oz household bleach per gallon of water, let sit 15 min, scrub with a stiff brush, then rinse and dry upside-down in sunlight for UV sterilization.