Still Have Fleas After Bombing? Here’s What To Do

Still Have Fleas After Bombing

Let’s face the truth. Flea bombs are not 100% effective in killing fleas.

We’ve found, in every instance when people have used flea bombs, they still have fleas after bombing.

So, why does it happen? And what can you do to make flea bombs effective?

Let’s find it out.

Why Don’t Flea Bombs Kill 100% Of Fleas?

There are two reasons why flea bombs aren’t 100% effective in killing fleas.

The first reason is the fog that settles on the floor after coming out of the flea bomb doesn’t cover the entire floor, especially in bigger rooms.

It stays right there where it lands. It kills only the fleas that are within the area of landing.

That’s why you’ll find all the flea bomb canisters mention the amount of area the flea bomb will cover. Most flea bombs cover 1000 sq foot in one fog spray.

Also, the aerosol spray from the flea bomb doesn’t have residual contagiousness, which means it cannot spread from one flea to another.

If one flea has aerosol on its body, then it cannot pass on to another flea. The other fleas can sense the aerosol on the infected flea’s body and go hiding.

Diatomaceous earth is more effective in killing fleas than flea bombs. It sticks with the flea’s body, penetrates its skeleton, dries the moisture inside the flea’s body, and kills it. Diatomaceous earth also spreads from one flea’s body to another.

The second reason is that flea bombs don’t kill eggs and pupae.

During flea treatment, killing the fleas’ eggs and pupae is essential, if not less important, as killing the adult fleas.

If you don’t destroy the flea eggs, then your entire flea treatment will amount to nothing. The eggs and pupae will hatch, and a new generation of fleas will infest your home.

Also, flea bombs don’t penetrate the carpet and fibers where the flea eggs and the larvae are hiding.

How To Use A Flea Bomb To Make It More Effective?

It would be best if you do some preparation to make a flea bomb more effective than it is typically.

Remember, a flea bomb has limited killing capacity. So, setting up your home for the flea bomb will ensure better results.

The preparation will not only ensure that it works, but it’ll also guarantee you, your family, and your pet’s safety from the aerosol deposit of a flea bomb.

Here’s how to prepare your home before you use a flea bomb –

1. Take your pets outside of your home. Pets exposed to the fog from the flea bomb can die. 

2. Turn off your refrigerator and all electronic appliances before using a flea bomb. It’d be better if you switch the fuse off. The spray from the flea bomb is highly inflammable. 

3. Turn the knobs of any natural gas supply in your home. 

4. Take all the utensils, dry foods like fruits, and toasters out of your home. You don’t want the fog from the canister depositing on them. 

5. Vacuum clean your room, floors, upholstery, bed, pet beds, carpets, and rugs. Vacuuming will remove all the flea eggs, larvae, and pupae hiding in them. And it’ll remove some adult fleas too. 

6. Shut down the windows and any other kind of ventilation. 

These steps will ensure that you’ve done the work in preparing your room to make it more susceptible to the flea bomb. 

Plus, you vacuumed your home, which took care of the larvae, pupae, and the eggs that flea bombs couldn’t kill. 

Now it’s time to use the flea bomb. 

Read the instructions on the flea bomb can carefully. Place a newspaper in the middle of the room and keep the flea bomb can on the newspaper. 

We recommend one flea bomb per room. It ensures that the fog from the flea bomb scatters well inside the room, covering the entire room area. 

Press the release valve and get out of the room as fast as you can. 

It’d be best for you to enter after 4-6 hours of using the flea bomb. That’s the average amount of time fleas take to die after a flea bomb. 

A Word of Caution: Never use flea bombs in wardrobe, closets, or drawers. 

What To Do After Using The Flea Bomb?

There’s still one more step left to do after using the flea bomb.

And that’s vacuum cleaning.

Why do you need to vacuum clean again when you’ve done it before using the flea bomb? It’s because to get rid of the dead fleas from your home.

No research says dead fleas can attract live fleas, but you don’t want to leave the fleas’ dead bodies around. So, vacuum your home again, especially your bed and upholstery.

Vacuuming will ensure that you remove any fleas hiding in the furniture gaps after the flea bomb explosion.

Better than vacuum cleaning is steam cleaning. Steam cleaners produce high heat that kills fleas.

But don’t forget to open the windows and ventilation of your home before you begin vacuum cleaning or steam cleaning your home.

Can You Flea Bomb One Room And Stay In The Home?

No, you can’t. And you must not.

Staying in a different room will not stop the harmful exposure you’ll get from the poisonous fog that comes out of a flea bomb.


If you still have fleas after the bombing, it means that you didn’t do the necessary preparation to make the flea bombs effective.

In this post, we’ve outlined those steps that you follow before using a flea bomb.

We’ve also mentioned the importance of vacuuming, both before and after using the flea bomb.

But flea bombs are not one all and be all solution against fleas. As we said earlier, their limited reach and lack of contagiousness make them ineffective.

University of Kentucky stated that bug bombs are ineffective in removing small bugs like fleas and bed bugs.

Flea bombs can be a temporary relief from fleas, but they’re not the long-term solution against fleas.

We highly recommend taking the help of an experienced pest controller to get rid of fleas.