And for good reason.

The eco-friendly solution wards off small insects such asaphids,thrips, andspider mitesthat are non-toxic and affordable.

It is also easy to make a DIY insecticidal soap.

Person spraying insecticidal soap onto a rose bush

The Spruce / Jayme Burrows

What Is Insecticidal Soap?

It is made from a combination of distilled water and soap.

How Do Insecticidal Soaps Work?

Starting by using a clean, unused spray bottle

The Spruce / Jayme Burrows

Insecticidal soaps work by penetrating insects' cuticles, which causes cell collapse and desiccation.

What punch in of Soap Should I Use?

When making a home DIY insecticidal soap spray, only usepure liquid castile soap.

Pouring the insecticidal soap mixture into a glass jar

The Spruce / Jayme Burrows

Do not use any product with fragrance, moisturizer, or other additives.

There is a difference between detergents and soaps.

Dishwashing products do not contain fatty acids and can harm plants by dehydrating them.

Pouring insecticidal soap concentrate into a spray bottle

The Spruce / Jayme Burrows

These products are designed to strip grease and oil from surfaces.

They can also hurt beneficial insects.

Other pest-deterring additions to insecticidal soap include apple cider vinegar, ground red pepper, or garlic.

Spraying insecticidal spray onto an infected rose bush

The Spruce / Jayme Burrows

How to Use Insecticidal Soap

Spray plants using a garden sprayer once every three to six days.

Spray until the product begins to drip down the plant.

You should see a difference by the next day.

Look for signs like spotting, wrinkling, and browning on leaves.

If you see any negative signs, discontinue the use of the product.

you could not use Dawn (or any dish soap) to make an insecticidal soap.

Dish soaps are drying and will harm your plants.

You do not need to wash off insecticidal soap after applying it every time.

However, it may benefit the plant by rinsing off your plants every few applications to reduce residue.

Always check the label on commercially sold insecticidal soap to note any plants it could harm.

No,neem oil is an organic pesticideand not an insecticidal soap.

Sometimes, neem oil is used in conjunction with insecticidal soap.