Made in the USA by Think Crucial
Dishwasher Cleaner & Descaler, 15 Uses
Shipping
Free U.S. shipping on every order
Dispatch
Ships in 1–3 business days
Works
Not sure? Ask us before you order
Returns
Unopened bottles: 30-day returns
The spec sheet.
- Size
- 16 fl oz
- How often
- Monthly, or more often on hard water
- Made by
- Think Crucial
When to replace it.
What owners say.
On thinkcrucial.com
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On Amazon
4.6 out of 5 from 10 ratings on Amazon (as of Oct 1, 2026)
Ratings and reviews from Amazon.com for the same Think Crucial product, as of Oct 1, 2026. They are separate from reviews on this site and aren't counted in them.
Before you order.
Shipping, returns and fit work the same on every product.
Q01Will it work with my machine?
Email support@thinkcrucial.com with the model number from your machine's label before you order, and we'll tell you whether it suits it.
Q02Is this made by the machine's brand?
No. It's made by Think Crucial. Always follow your machine maker's own instructions.
Q03What if it doesn't work, or I change my mind?
Unopened bottles can be returned within 30 days of delivery. For safety we can't take back opened bottles.
Q04When will it arrive?
Shipping to U.S. addresses is free on every order. It ships from our fulfillment center in 1–3 business days and arrives in 3–7 business days.
Q05Is there a subscription?
No. You buy one when you need one. Nothing renews and nothing auto-ships.
We make what we sell.
Think Crucial started in 2007 at a family vacuum repair shop. Today we make our own descalers and cleaners here in the USA, plus aftermarket filters, bags and parts. Each one says what it's for.
- Find the model number on the rating label
- Match it to the list on this page
- Not listed? Ask us before you order
Ready to order
Dishwasher Cleaner & Descaler, 15 Uses
$21.99Free U.S. shipping
Unopened bottles: 30-day returns.
Full product description
A dishwasher that leaves film on glassware, smells stale or has stopped drying properly is usually scaled. Hard water plates calcium carbonate onto the heating element, the spray arms and the sump, and detergent alone will not remove it.
This is a 32% citric acid liquid concentrate — 33.5% total acid with lactic — that dissolves that limescale rather than masking the smell. Pour 2 tablespoons in and run a hot cycle empty. No tablet dissolution problems, no powder to measure, 15 doses per 16 fl oz bottle.
Features:
- Works with all major brands – Whirlpool, Bosch 300/500/800, KitchenAid, Samsung, LG, GE, Frigidaire, Maytag, Amana, Kenmore, Miele, Thermador and any standard dishwasher that accepts a liquid cleaner.
- 15 uses per bottle – One 16 fl oz bottle delivers 15 descaling cycles at the 2-tablespoon dose — over a year at monthly cleaning.
- 32% citric acid concentrate – A 33.5% total acid formula (32% citric plus 1.5% lactic) that dissolves calcium carbonate limescale directly.
- Removes odours as well as scale – Clears the hard-water deposits and trapped residue behind stale dishwasher smells.
- Four food-grade ingredients – No phosphates, no chlorine bleach, no EDTA, no borates. Biodegradable and septic safe. Made in the USA.
How to use:
- Empty the dishwasher completely.
- Pour 2 tablespoons into the bottom of the tub.
- Run a full hot cycle with no detergent and no dishes.
- Repeat monthly, or more often on hard water.
Why Think Crucial:
- US-based, family-owned brand serving over 1,000,000 households since 2007
- Replacement parts, filters and cleaning solutions for commonly used appliances
- Customer support available if a product does not perform as described
Think Crucial is an independent brand. Brand and model names are used to show compatibility only; this is a Think Crucial product, not made by the appliance manufacturer. If it doesn't work with the machine we list, email us and we'll refund it. Always follow your appliance manufacturer's own cleaning and descaling instructions.
How to use it: see our step-by-step guide: How to descale a dishwasher.
Brand and model names are used only to show compatibility. Think Crucial is an independent brand, not affiliated with those manufacturers. Always follow your machine maker's own descaling instructions.