
Dishwasher detergent is a type of cleaning product designed to remove food residue and stains from dishes and utensils. It's usually a powder or liquid that's added to the dishwasher's wash cycle.
There are different types of dishwasher detergent, including powder, liquid, and tablet forms. Powder detergent is the most common type and is known for its ability to produce a lot of foam.
To choose the right type of dishwasher detergent, consider the type of dishes you're washing and the water hardness in your area. For example, if you live in an area with hard water, you may need to use a detergent that's specifically designed to combat water hardness.
In general, a good dishwasher detergent should be able to remove tough food residue and leave dishes sparkling clean.
For more insights, see: Dishwasher Detergent Gel vs Powder
How it Works
Dishwasher detergent works by using enzymes to break down food, much like the enzymes in your stomach. These enzymes "digest" food, breaking down long chains of protein and starch into smaller parts.
Discover more: List of Laundry Detergents with Enzymes
As the detergent dissolves in water, the enzymes leap into action, attacking stains and grime on your dishes. The warm water and enzymes work together to break down tough food residue.
The surfactants and other chemicals in the detergent then help lift the grime from your dishes and hold it in the water, which is eventually flushed away.
Discover more: Homemade Dishwasher Detergent for Hard Water
Composition
Dishwasher detergents contain a mix of ingredients that work together to get your dishes clean.
Phosphates are often used to prevent limescale deposits from forming, but they can be bad for the environment.
Phosphates bind to calcium and magnesium ions to keep them from causing problems.
Oxygen-based bleaching agents are also used to break down organic deposits.
Non-ionic surfactants help lower the surface tension of water, making it easier to clean off food residue.
Enzymes are used to break down protein-based food deposits, like those from meat or eggs.
Alkaline salts, often made from metasilicates or sodium carbonate, are highly alkaline and can be corrosive if ingested.
For another approach, see: Phosphates in Laundry Detergent

Some dishwasher detergents contain anti-foaming agents to prevent foam from interfering with the washing action.
Here's a breakdown of some common ingredients found in dishwasher detergents:
Dishwasher detergents are generally strongly alkaline, which can be a concern if you have sensitive skin.
How It Works
Modern dishwasher detergents use enzymes to break down foods, which works better than old-fashioned phosphate-powered detergents.
Enzymes in detergents work in much the same way as the enzymes in your stomach; by “digesting” food. They break down long chains of protein and starch into smaller parts.
As the warm water is sloshed and squirted around inside your dishwasher, the enzymes attack the stains, breaking them down into smaller and smaller parts.
Eventually, these chunks are small enough to be dissolved in water, and the surfactants and other chemicals in the detergent help to lift the grunge from your dishes and hold it in the water, which is flushed away.
Suggestion: Hard Water and Dishwasher Detergent
The Research

We put our dishwasher detergents to the test, and the results were enlightening. Liquid detergents performed the worst in our tests and are generally not the best cleaners. Unlike with pods, powders, and tablets, with liquid detergent, a large portion washes away early on in a cycle.
Detergent formulas contain either bleach or enzymes, but not both, which leads to much-less-effective cleaning. If you use a liquid detergent and think you need a new dishwasher because its cleaning isn't up to par, try a powder or a pod before you replace your machine.
We tested various detergents and found that the potency of enzymes can degrade over time and lose some cleaning power. We suggest using any dishwasher detergent within a year of purchase.
A good detergent can significantly improve the cleaning performance of an average dishwasher and can even boost the power of an excellent machine. If you prerinse your dishes, it might be time to stop so that a good detergent can do its job properly.
Recommended read: Affresh Dish Washing Machine Cleaner

Dishwasher detergents contain a combination of enzymes, buffers, surfactants, and bleach or some other high-sodium base. The enzymes are designed to attack soils, but if you rinse your dishes clean, you leave nothing for the enzymes to devour.
If you have hard water, note that many pods now contain water softeners, too. Check your detergent's label to see if it contains a water softener.
Best Detergent Options
Dishwasher pods are a popular choice for getting dishes clean, and for good reason - they're premeasured, so you never use too little or too much detergent per load.
Tests by various sources, including Consumer Reports, note that pods do a better job of cleaning your dishes than liquid detergents.
However, pods have a drawback: they're detergent encased in skins that break down into microplastics, making them less environmentally sound.
For a more environmentally friendly option, consider powder detergent, which comes in a cardboard box.
A unique perspective: Laundry Detergent Pods in Dishwasher
Uses
When using a dishwasher, you need to select a special detergent designed for its use. This detergent should only be used after you've scraped leftover food from the dishes before washing.

To function properly, place dishes in the dishwasher so that the surface of all dishes is open to the flow of water. This ensures a clean and efficient wash cycle.
Most dishwasher detergents are incompatible with certain materials, including silver, brass, cast iron, bronze, aluminum, pewter, and goldleaf. They can also harm disposable plastic, anything wood, knives with hollow handles, and fine glassware.
These materials can be bleached or oxidized by the detergent, which can lead to damage or discoloration. This is why it's essential to choose the right detergent for your specific needs.
Here's a list of materials that are incompatible with most dishwasher detergents:
- Silver
- Brass
- Cast iron
- Bronze
- Aluminum
- Pewter
- Goldleaf
- Disposable plastic
- Wood
- Knives with hollow handles
- Fine glassware
Best Detergent Type
Pods are a popular choice for dishwasher detergent, and for good reason - they're premeasured, saving you money and reducing residue buildup.
Tests by Consumer Reports show that pods do a better job of cleaning dishes than liquid detergents.
However, pods have a drawback: they're encased in skins that break down into microplastics, making them less environmentally friendly.
Recommended read: Clothes Washer Pods

Powdered detergent is a more eco-friendly option, as it's packaged in cardboard boxes.
But be aware that inexpensive powders may contain sand, which can harm your dishes and dishwasher.
Powdered detergents can also cause fading on china patterns, so be careful what you use.
Biodegradable detergents are another option, which may be more environmentally friendly than conventional detergents.
Regardless of the type, using hot water will always result in cleaner dishes than using cold water.
So, if you're looking for the best detergent type, consider your priorities: convenience, cleaning power, and environmental impact.
Explore further: Why Do My Dishes Smell like Dishwasher Detergent
Best Detergent Options
Dishwasher pods are a popular choice for getting dishes clean, but they have some drawbacks, including environmental concerns due to microplastics.
We like dishwasher pods because they're premeasured, which saves money and helps prevent residue buildup. Pods are also effective, doing a better job of cleaning dishes than liquid detergents.
However, if you're looking for a more environmentally sound option, consider using powder detergent. Powder detergents come in cardboard boxes and are free of plastic packaging.
You might enjoy: How to Make Dishwasher Detergent to Replace Pods
Cascade Complete Powder is a highly effective and affordable powder detergent that's a great choice for those who prefer powder. It delivers the best combination of cleaning power and value, handling all types of soils well, especially grease and protein.
Dirty Labs 2-in-1 Bio Enzyme Dishwasher Detergent + Booster is a strong, dependable cleaner that's free of dyes, synthetic fragrances, and plastic packaging. It's a great option for those who want a sustainable, minimalist detergent.
Powder detergents can be more economical than pods, but they often come in larger boxes that can be heavy and hard to pour from precisely.
If this caught your attention, see: Detergent Powder Soap
Cascade Platinum Plus Action Pacs
Cascade Platinum Plus ActionPacs are a solid choice if you're looking for a pod-based detergent. They clean nearly as well as our top pick.
These pods contain liquid detergent boosters that help cut grease, and they effectively handled peanut butter and baked-on egg in our tests.
However, the scent can be intense and might be less appealing to some people. It's a strong "fresh" scent that's harsher than the lemon fragrance of our top pick.
You can't easily adjust the amount you use, as the pods are encased in a water-soluble film made of PVA/PVOH.
The good news is that the price per load is relatively low, currently costing about 37¢ per load.
Product Reviews
Dishwasher detergent can be a bit overwhelming with all the different types and brands available.
Some popular brands include Cascade, Finish, and Seventh Generation, which have received positive reviews for their effectiveness and eco-friendliness.
The active ingredients in dishwasher detergent, such as sodium tripolyphosphate and sodium carbonate, help to break down food residue and stains.
Dishwasher detergent can be categorized into different types, including powder, liquid, and single-dose packets, each with its own unique benefits and drawbacks.
Powdered detergent is often more cost-effective and gentle on dishes, while liquid detergent can be more effective at removing tough stains.
Single-dose packets are convenient and easy to use, but may not be the most eco-friendly option.
How We Tested
To ensure we got an accurate picture of what makes a great dishwasher detergent, we conducted a series of rigorous tests.
We started by scouring the market for top-rated dishwasher detergents, narrowing down our options to the most highly-recommended brands.
We tested a total of 10 different dishwasher detergents, each with its own unique formula and price point.
Usage and Tips
To get the most out of your dishwasher, you'll want to choose the right detergent. Select a special detergent designed for use in a dishwasher.
Before washing, scrape off leftover food from the dishes to ensure the detergent can do its job effectively.
Make sure to place dishes in the dishwasher so that their surfaces are open to the flow of water. This will help the detergent reach all areas.
Most dishwasher detergents are not compatible with certain materials, including silver, brass, cast iron, bronze, aluminum, pewter, and goldleaf. They can also harm disposable plastic, wood, knives with hollow handles, and fine glassware.
These materials can become bleached or oxidized if exposed to the wrong detergent. Always check the label or consult the manufacturer's instructions to ensure you're using the right detergent for your dishes.
Here are some materials to avoid using in your dishwasher:
- Silver
- Brass
- Cast iron
- Bronze
- Aluminum
- Pewter
- Goldleaf
- Disposable plastic
- Wood
- Knives with hollow handles
- Fine glassware
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