Fleas are a nuisance insect that most pet owners deal with, mainly in the spring and summer months. Fleas have impressive jumping skills and can propel themselves 40 to 100 times their body length in distance, jumping up to 2 feet in height. To gain perspective on their jumping skills, this is equivalent to a 6-foot human jumping approximately 336 feet! They are small, black, wingless, and hard to kill due to their long life cycle. So, how do you get rid of these pests? Will bleach kill fleas? The answer is yes, bleach is effective in killing fleas; however, bleach is harmful to pets.

So, what to do? In this article, we’ll explore the use of bleach on fleas and how to remove fleas from your home and pet safely.

How Is Bleach Harmful to Pets?

Bleach is highly effective in killing fleas due to its significant toxicity. Not only does bleach kill fleas, but it also kills all stages of the life cycle, including the eggs and larvae. Bleach contains an active component called sodium hypochlorite that kills fleas quickly and it only takes 2 to 3 hours to kill them entirely, eggs and all. That sounds wonderful, right? Unfortunately, the same product that kills fleas is also harmful to your pets.

Bleach can cause severe skin lesions on your pet and may also cause respiratory and digestive issues if accidentally consumed. In a nutshell, if you have pets, you should never use bleach as a method of killing fleas.

Does Diatomaceous Earth Kill Fleas Without Harming Pets? 

Bleach is out of the question for killing fleas around your fur babies, but what can you use to kill them safely around your pets? Food-grade Diatomaceous Earth (DE) is a DIY option for killing some life-cycle stages of fleas around your home.¹ DE is made from fossilized diatoms, which are single-celled algae that inhabit streams, oceans, lakes, and other water channels. The cell walls of these fossilized diatoms are made of a fine powder called silica.

Silica is made up of tiny particles that act like shards of glass when fleas venture through it. Since fleas have a hard exoskeleton that is hard to break, the silica penetrates the exoskeleton, causing the flea to dry up and die.

Applying DE directly onto your cat or dog’s fur is not recommended, as this method is ineffective in killing fleas. Instead, sprinkle DE in the areas you see fleas, such as the perimeter of your yard. Most veterinarians do not recommend using DE due to overusing the product, and DE only kills adult fleas; plus, you should use safety precautions when handling it. If you choose to sprinkle the product in your yard, ensure you wear clothing to protect the skin, goggles, and a dust mask to prevent respiratory issues.