Krud Kutter Original Concentrated Cleaner/Degreaser
Priced as of May 26, 2026
4.7(1,241 ratings)Subscribe & Save: $15.48 (5% off)Buy on AmazonSaved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
As an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure
Prices may varyHealth score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
From the Safety Data Sheet
Full SDS ↗ (rev. 2024-01-16)GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
EyesRequiredMfr. SDS §8 · 29 CFR 1910.133(a)(1) · GHS H320SkinRequiredMfr. SDS §8 · 29 CFR 1910.138(a) · GHS H315LungsSituationalMfr. SDS §8Ventilation—No PPE in published sourcesShow details for all categories ▾Hide details ▴
From the manufacturer’s Safety Data Sheet, Section 8
“The validate.ts pH-gate (W19) forces eyes `required` at concentrate pH ≥ 12.0. The mixture-level SDS classification is H320 (Eye Irritation Cat 2B), which the rubric maps to `recommended` — but the pH-gate overrides this because strongly alkaline concentrate at pH 12.5–13.5 poses irreversible eye-damage risk on direct contact that H320 alone does not fully capture. Source is editorial_override reflecting the pH-gate rule.”
— Krud Kutter
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“The validate.ts pH-gate forces skin `required` at concentrate pH ≥ 12.5. Mixture-level SDS classification is H315 (Skin Irritation Cat 2), which maps to `recommended` — but pH 12.5–13.5 at concentrate strength exceeds the threshold for corrosive damage on prolonged contact. PPE tier reflects working-concentrate exposure.”
— Krud Kutter
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“No respiratory H-code at mixture level (no H335, H331, H334). VOC is 0.00%. Lungs `situational` because the spray-into-engine-bay scenario in a closed garage concentrates alkaline vapor at face height. Outdoors or with garage doors open, no inhalation protection is indicated by the SDS classification.”
— Krud Kutter
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
The Podium · Top 3 in Engine Degreaser
See the full ranking →This product ranks #5 of 9 in Engine Degreaser.Three above it ↓
CarCareTruth's Analysis
Last reviewed May 26, 2026
TL;DR Concentrated alkaline degreaser — effective on light-to-moderate engine grime with dwell and a rinse, not a one-pass stripper for severely neglected bays. EPA Safer Choice certified, water-based, zero VOC. Wear goggles and chemical-resistant gloves when handling full-strength concentrate.
What it is and how it performs
A water-based alkaline concentrate for engine bays, garage floors, and general degreasing. Apply at working concentration, dwell a few minutes, rinse; brush agitation improves results on heavy deposits. Community data is Amazon reviews only (4.7 stars, 1,200+ verified-purchase reviews) — no independent forum threads or video comparisons against heavily fouled engine bays were found, so the degreasing-power score is capped at provisional confidence. SDS §10 notes the formula slowly corrodes copper, aluminum, zinc, and galvanized surfaces — rinse promptly and avoid extended dwell on bare metal.
Who should buy this — and who should skip it
Right for owners who want a capable multi-use concentrate at a competitive price with EPA Safer Choice certification and zero-VOC formula. Skip it if one-pass removal of a heavily neglected engine bay is the priority — stronger solvent-based degreasers with community-confirmed performance on extreme fouling are better matched.
Safety and environmental impact
The SDS assigns no product-level GHS signal word — mixture classification is H315 (skin irritation) and H320 (eye irritation), as actives fall below OSHA corrosion thresholds at mixture concentrations. The concentrate pH of 12.5–13.5 means genuine eye- and skin-damage potential at full strength; the SDS classification and pH both direct splash goggles and chemical-resistant gloves. Lungs protection is situational (no respiratory H-codes, zero VOC), but SDS §7 directs outdoor use or fully open garage doors when spraying. Environmental profile is among the strongest in the category: water-based, zero VOC, EPA Safer Choice certified, no aquatic toxicity codes.
Frequently asked questions
How does Krud Kutter Original Concentrated Cleaner/Degreaser score on CarCareTruth?▾
CarCareTruth scores Krud Kutter Original Concentrated Cleaner/Degreaser at 7.2 out of 10 on the composite CCT score, with a health sub-score of 8.5/10. The CCT score blends real-world effectiveness, ingredient health impact pulled from the manufacturer's safety sheet, and environmental footprint against a published category rubric. See the methodology link on this page for the full scoring breakdown.
What's in Krud Kutter Original Concentrated Cleaner/Degreaser?▾
Per the Safety Data Sheet ingredient disclosure: Fatty Alcohol Ethoxylate (CAS 160875-66-1, 1.0–2.5%), Sodium Metasilicate (CAS 6834-92-0, 1.0–2.5%), Potassium Hydroxide (CAS 1310-58-3, 0.1–1.0%), balance Proprietary
From the manufacturer
Marketing copy from Krud Kutter, via Amazon. Not editorial.
- •Powerful Concentrated Degreasing Formula Helps break down grease, oil, grime, wax, and tough stains on a wide range of surfaces.
- •Dilute for Custom Cleaning Strength Use full strength for heavy duty cleaning or dilute for lighter everyday tasks, offering flexibility and value.
- •Multi Surface Cleaning Solution Suitable for use on floors, countertops, appliances, concrete, siding, tools, and other washable surfaces.
- •Ideal for Large and Frequent Cleaning Jobs Gallon size is perfect for high usage households, workshops, and professional environments.
- •Works Indoors and Outdoors Use throughout the home, garage, and exterior spaces to tackle buildup wherever it occurs.
Weekly pick
One product, one safety verdict, every week. No spam.
Manufacturer videos
Manufacturer specifications
- Brand
- Krud Kutter
- Item Form
- Spray
- Scent
- Unscented
- Specific Uses For Product
- Cleaning
- Material Feature
- Biodegradable
- Surface Recommendation
- Concrete
- Special Features
- Concentrated
- Contains Liquid Contents?
- Yes
- Compatible Refills
- krud_kutter_original_cleaner
- Material Features
- Biodegradable
- Item Volume
- 128 Fluid Ounces
- Unit Count
- 3785.41 Milliliters
More in Engine Degreaser
Chemical Guys
Signature Series Orange Degreaser
CCT 7.4 · RecommendedHealth 9.5
WD-40
Specialist Industrial-Strength Cleaner & Degreaser
CCT 7.4 · RecommendedHealth 9.5
Purple Power
Industrial Strength Cleaner/Degreaser
CCT 7.4 · RecommendedHealth 9.2
Simple Green
Pro HD Heavy-Duty Cleaner & Degreaser
CCT 7.3 · RecommendedHealth 8.3
As an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure
Community
0 postsShare how you use this product
Drop a quick comment or post a full review with photos and a star rating.
Sign in to postNew here? Create a free account.
Top Amazon review
↗External — Amazon's most-helpful review for context.
Fire Damage - smoke & soot
We experienced a devastating house fire. Fire raged through one end of the house, heavy smoke and soot found its way in every nook and cranny. 1400 degree heat melted light fixtures, boiled food in the refrigerator. We had extensive pieces of china (Spode, Wedgewood, Herend), ceramics, glass, crystal (Waterford, Baccarat, Yeoward), kitchen ware - some exposed, some in cabinets. The insurance company sent a "service" out the day of the fire. They took 'samples' to see what could be salvaged. When they returned 5 days later, they were prepared to start packing and removing the remaining household items, declaring items were too labor intensive to save. Meanwhile, I went into high gear, filled a couple of plastic bins with similar items and started experimenting with several products at an off site garage sink. Krud Kutter was a name that came up on a fireman's wife's blog. I quickly discovered soot and smoke doesn't rinse off, nor does it wash off easily. I bought the Krud Cutter in the 32oz spray bottle. Using a degreaser dish washing liquid for the first clean and old terry washcloths (sponges and brushes weren't effective), I discovered that Krud Kutter cut through and literally melted off residue in cracks, crevices, corners, etc. I rinsed everything well and dried it, packing it in non print newspaper and plastic bins. I had Herend china with gold leaf on an open hutch totally covered with soot and smoke, even looking scorched. I cleaned 60 some pieces in 3 hours with Krud Kutter and it looked brand new. The 'service' said it took them 3 hours on a coffee pot and they managed to rub off and remove all the gold leaf. I then checked with my local fire department whether Krud Kutter would be safe in our septic system and got the go ahead. A real plus that it is biodegradable, non toxic, and was gentle on my hands (which were taking a real beating!)I immediately ordered 6 gallons of the Krud Kutter concentrated Cleaner Degreaser from Amazon and it arrived quickly. I cleaned a large ceramic WOVEN basket with 30 pieces of fruit in an hour. This product is truly amazing - it saved every piece of non porous china, crystal, glass, ceramics, lamp bases, etc. that had not exploded or cracked from the intensive heat. I also discovered that the length of time the damaged items "sat" didn't effect the successful results using the Krud Kutter cleaner. So, I didn't have to panic that I needed to get everything cleaned up immediately. Storing the bins off site, periodically lifting a cover - no smoke odor whatsoever. The house has been leveled, and we're rebuilding and I plan to repeat the cleaning process with just the Krud Kutter product before placing them in our 'new' home. Losing everything porous - clothing, furniture, rugs, drapes was pretty devastating. But, I swear, without this product, we would have lost everything. I have l/2 gallon left, and have 50plus bins stored. It's truly amazing how quickly it works. It will remain a staple on my shelf!Was the whole process labor intensive? Yes. Was it worth it? Yes . Needless to say, we didn't use the 'service'.