CarCareTruth Score
Decent.
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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.
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.
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Translated from the manufacturer’s Safety Data Sheet, Section 2
SDS §2 classifies the as-sold tablet Eye Irrit. 2, H319 (causes serious eye irritation), Signal Word WARNING, and §11 confirms real eye irritation for this pathway (not boilerplate) · SDS §8 specifies safety glasses. Recommended rather than required because H318 (serious eye damage) is not present.
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses 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.
Only when: prolonged use
Beyond SDS: translated from the ingredient chemistry
No H311, H315, or corrosive H-codes in SDS §2, and §11 marks skin irritation Not Classified. Dry sodium-carbonate dust during handling can mildly irritate damp skin over prolonged or repeated contact, but a brief one-tablet drop into a reservoir has no chemistry basis for a higher tier. SDS §8 names protective gloves/clothing; surfaced here as a situational precaution rather than omitted.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Only when: in enclosed space
Translated from the manufacturer’s Safety Data Sheet, Section 8
SDS §8 names respiratory protection 'in case of insufficient ventilation.' §2 carries no inhalation hazard code (no H330/H331/H335/H336) and §11 marks inhalation Not Classified, so this is a poor-ventilation precaution, not a mixture-level respiratory hazard · surfaced here rather than silently omitted.
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.
California Prop 65 warning
This product's Amazon listing carries a California Prop 65 warning. The manufacturer's Safety Data Sheet (§15) does not list a Prop 65 substance for this product — we show the warning for transparency and flag the discrepancy rather than silently picking a side.
Scope of these PPE tiers. The tiers on this page translate the product's Safety Data Sheet where one is published, plus its ingredient chemistry, into a comparable rating. They describe a formulation, not a situation: a tier is not a safety determination for any specific user, task, quantity, or environment. The manufacturer's label and use instructions govern how the product is handled. Where the product is used at work, the employer's PPE program and hazard assessment under 29 CFR 1910.132 decide what protection is selected, not this page.
No warranties. CarCareTruth makes no warranties, express or implied, and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose.
This product ranks #4 of 19 in Washer Fluid.Three above it ↓
Last reviewed June 14, 2026
TL;DR Summer-use only · no antifreeze, so the working solution freezes at 32°F. Above-average cleaning at roughly 65¢ per gallon, well-reviewed by owners. Health 7.5/10 · WARNING-class from the tablet's H319 eye-irritation classification on an otherwise benign water-and-washing-soda chemistry; the dissolved working solution is below the irritation threshold. Skip it if your climate drops below freezing at any point in winter.
Each pressed tablet drops into a clean reservoir of water and makes one gallon of washer fluid · 25 tablets per tube, ships small, no plastic jug. Rated for use above 32°F only; this is a summer cleaner, not a winter fluid. Owners consistently rate bug and road-film removal above commodity ready-to-use fluid; streak complaints are rare. Tablets dissolve slowly in cold water, so mix in a warm reservoir or pre-dissolve in a jug for fastest results.
Best for daily drivers in southern or coastal climates where reservoirs never freeze, anyone tired of hauling gallon jugs from the store, and buyers who want minimal plastic waste and a lighter shipping footprint. Skip it anywhere winter temperatures drop below freezing · drain the reservoir or switch to a winter fluid rated for your climate.
WARNING signal word from H319 (causes serious eye irritation) · the SDS basis for eye protection during pour-fill where tablet dust can contact eyes. No DANGER, no acute toxicity, no Prop 65 ingredient. Drain-destined via stormwater; SDS §12 states the formula is not harmful to aquatic organisms. Environment score 7/10 reflects the clean chemistry against the drain-path multiplier.
No. The working solution is one tablet dissolved in plain water, and plain water freezes at 32°F. The label and SDS both confirm 'for use in temperatures above 32°F.' In any climate that hits freezing, the reservoir and washer lines can freeze and crack. Drain the reservoir for winter or switch to a methanol-based winter fluid until spring.
Twenty-five gallons. Each of the 25 tablets makes one gallon when dropped into a clean reservoir of water. On a per-working-gallon basis, the format runs well below the cost of commodity ready-to-use jugs at typical retail pricing.
The working solution is a mild alkaline cleaner (sodium carbonate, ~0.13% in water at use dilution) with a pH around 7-8 · essentially neutral once dissolved. We did not find a widely documented compatibility issue in the owner review corpus, but absence of complaints is not the same as proof of compatibility; if your vehicle's manual specifies a particular fluid type, follow that.
The SDS classifies the as-sold pressed tablet · not the diluted working solution. Dry sodium-carbonate dust can cause serious eye irritation on direct contact, which triggers the H319 classification and WARNING signal word at the tablet level. Once the tablet dissolves into a gallon of water, the concentration drops below the H319 trigger threshold. Standard practice is to honor the SDS as written.
No. The only disclosed ingredient · sodium carbonate (CAS 497-19-8) · is not on the OEHHA Proposition 65 list, and the SDS §15 contains no Prop 65 content. The v1.0 SDS explicitly stated no Prop 65 substances are present; the v2.1 revision is silent but did not add a Prop 65 ingredient. The Amazon cached Prop 65 flag is a default-true Amazon-side signal with no evidentiary basis for this product.
Marketing copy from 303 Products, via Amazon. Not editorial.
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