Is Dawn Dish Soap Safe For Pressure Washers?

When using a pressure washer to clean the exterior of a house, a detergent or soap is essential. On the other hand, a blast of water will not be enough to remove oily filth and grime. Adding a little more detergent or soap will help. But is Dawn dish soap safe for pressure washers?

It’s essential to keep in mind that some detergents are too harsh for special pressure washers. So we’ll answer the question, “Is Dawn dish soap safe for pressure washers?” or “Can I use dish detergent in my pressure washer?” in this post.

Furthermore, we’ll address the issue of “What kind of soap can I use in my pressure washer?”

Is Dawn Dish Soap Safe For Pressure Washers?

According to a recent study, Dawn Dish Soap is America’s best-selling dish soap because it delivers up to 50% less scrubbing. Dawn may also be used to clean other areas of the house, making it quite flexible.

It’s self-evident that we should use dish soap in pressure washers to get a gleaming clean on various surfaces. 

Pressure washer detergents are primarily biodegradable and do not harm the machine or the environment. In that case, Dawn detergent is an excellent choice because it is both biodegradable and environmentally friendly.

The cleaning solutions for pressure washers are designed to quickly remove stubborn stains, grease, oil, dirt, and other contaminants.

Dawn dishwashing detergent maker Procter & Gamble (P&G) has given thousands of detergent bottles to help clean wildlife creatures harmed by oil spills. Therefore, you may use them in your pressure washer to clean difficult dirt based on their product quality.

Dawn may not remove all the stubborn dirt from a surface because it is mainly used for dishwashing, but it will get the job done. You just need to rinse your pump correctly with clean water after using this detergent, or it may ruin your machine.

How To Use Dawn Soap For Pressure Washer?

You can apply Dawn soap to your pump in a couple of different ways. 

  1. A detergent reservoir may be included with some pumps. After filling it with Dawn, the pump draws some of the detergents in with the water and mixes them inside.
  2. The alternative option is to take water from a substantial external reservoir that has previously been combined with detergent and water.

Large droplets of detergent can get into the pump in both situations and clog it up. To avoid this, make sure the detergent is dissolved in the water by mixing it in the external tank.

After you’ve finished pressure cleaning, we recommend running some hot water through the pump without any detergent to ensure that any soap detergent is gone from the interior.

Some chemicals are harmful to your pressure washer, and you should avoid them at all costs. For example, it may be tempting to load your pressure washer with bleach and clean the mold off your deck (or anyplace else), but bleach will harm the interior of your pressure washer.

4 Best Cleansing Products For Pressure Washer

As a result, dish soap isn’t the most fantastic cleanser to use around the house. So, what kind of detergent for pressure washers do folks use in their pressure washers? We’d like to share some suggestions with you.


Water, especially if you have a hot water pressure washer, is sometimes all you need. First, check to determine if water will clean the area you wish to clean. If it does, you’ve just saved money and avoided releasing additional chemicals into the environment.

Cleaning by Using Vinegar Instead of Soap

A mixture containing 30% vinegar and 70% water can help you solve your problem. Vinegar contains antibacterial and antifungal effects. You may add a few drops of essential oil to the vinegar to mask the scent.

Laundry Detergent Soap

Combine 1 gallon of water with half a cup of washing detergent. Dish soap is weaker than laundry detergent and is not clean as well. For an environmentally responsible alternative, choose phosphate-free washing detergent.

Multipurpose Cleaner

Your pressure washer may be used with various multipurpose home cleansers—mix 2 cups per 1 gallon of water. If you’re doing heavy-duty work, raise the quantity; but lower it in case you’re doing a light-duty job.

4 Reasons Why This Soap Is Bad For Pressure Washer

While dish soap in your pressure washer won’t cause damage right away, it’s not ideal for long-term use.

Here are some of the reasons why dish soap isn’t a good choice for pressure washers:

  • May clog your pressure washers: Any soap, cleanser, or detergent that isn’t designed for pressure washers might clog or jam up the machine’s components. Soaps made for pressure washers are designed to flow through the machine’s components without clogging.
  • Not as successful: Sure, dish soap works great on a greased casserole dish, but it lacks the cleaning strength of a pressure washer formula on a concrete or wood surface. Is it possible to complete the task with dish soap? Perhaps, but it will need more time, work, and water.
  • Cause residue: Plain dish soap leaves a hazy on certain surfaces look, resulting in a less-than-stellar finish.
  • In the long term, it is not as cost-effect: While it may appear that grabbing your bottle of dish soap instead of buying a pressure washer detergent will save you money, you may be shocked by how much soap you use up. The amount will rapidly add up. In fact, pressure washer detergent is less expensive than Dawn dish soap by gallon.


So, now that we’ve addressed the question, “Is Dawn safe for pressure washers?” you may use your Dawn dish detergent for pressure washing whenever you want. When cleaning with soap, make sure to follow the directions in your pressure washer’s handbook.

Detergents with comparable components, such as Dawn dish soaps, are also available. All you have to do now is find the one that is suitable for you.

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