This overall score is based on how well the plates are cleaned using two methods and is made up of scrub test (90%) and foam test (10%).

Dirty plates are soaked in a 1% solution of test detergent for 10 minutes before being placing in a mechanical scrubbing device, where they're scrubbed a set number of times with a wet sponge. Each product is tested four times, and the scores are averaged for consistency. The score is based on how clean each plate is after scrubbing, which is measured using a spectrophotometer.

The plates are pre-soiled with blends of different types of stains you'll typically have to deal with at home – rice starch, bolognaise and egg yolk.

How long the foam lasts. Using 4mL of each product in 5 litres of water, we wash pre-soiled plates at timed intervals in warm water, and count the number of plates cleaned until all the foam in the basin dies.

How many plates you can potentially wash per bottle before the foam in your sink dies. Tested using 4mL of each product in 5 litres of water.

We recommend currently available dishwashing liquids with an overall score of 60% or higher.

This is the price we found for the pack size listed, but the only price that matters is what you pay and the specials available on the day.

This is calculated based on the price we found for the pack size listed, but the only price that matters is what you pay on the day.

This is the size of the pack we purchased. The larger the pack, the larger the savings that could be made.

Where the product lists ingredients, we detail them.

Shop Ethical utilise formulas based on third party independent ratings to derive an Ethical rating for each company (not product) ranging from A for the best to F for the worst. See the link to their website at the top of this review page for more information.

Company that owns the brand name.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.

This is a claim on the packaging. It might be accompanied by an official looking label, or just a piece of text stating the claim. We haven't tested it, so take all claims with a grain of salt.