It’s unlikely to kill them once it has dried, unless it is sprayed directly on them it might repel, but won’t kill.

I sprayed Raid Ant and Roach Killer on a Vietnamese centipede, and it died.

Ordinary Raid is not the type of insect killer that you can spray and wait for the insect to crawl over it. It doesn’t work that way. I’m not sure what you can buy at the store that works like that. I think you have to get a professional to come in and spray.

Sorry I should have clarified I have this raid spray that claims to last two weeks. It is supposed to have residual effect that once sprayed it will kill bugs that come in contact with it. This can is specifically for spiders and roaches which includes centipedes according to the label on the back. I was just wondering how long these things would take to die once they come in contact with the spray.

I’m sorry. I don’t know the answer to your clarified question.

I hate centipedes.

In my experience with chemicals like that (I used it to kill bees) they seem to die within a few minutes, if they are tough bastards. I don’t know about centipedes, but they have similar biology (in regards to poisons).
I’m not an expert, so don’t quote me.

@jtvoar16 Bees are our friends…bad bee killer, bad!

If you used the Raid Max Bug Barrier it says it will keep killing for up to 12 months but could not find info on how quickly it will kill the bugs. I read one reviewer mention he sprayed a spider in one spot in his house and it died instantly and he said he now keeps finding dead spiders in the same spot months later so it must dispatch the bugs quickly to find them near the pesticide.

@Cruiser Ewww…poison that lingers for an entire year, scary if you ask me!

@Coloma I know. My wife insists on having our house treated by a professional exterminator 4 times a year and now has me questioning the effectiveness of their product and the necessity of 4 treatments a year.

Try diatomaceous earth. It pretty much destroys the exoskeleton of insects and the animal dries out. And for the most part it’s edible to humans and pets just buy ‘food grade’ and sprinkle it around where ever you typically see the centipedes or set up bait with DE sprinkled around. It works for my roach problem, I’ve waged war against them last week I’m liking the results so far.I got 4oz off ebay for about 4$

@pleiades You can get a 5 lb bag of DE for $14.00 here If you need a lot, the 50 lb bag is a real deal.

@Cruiser Thanks! I’m not too sure how much I need though, we have a 1 bedroom apt not much ssurface to cover :)

I know millipedes are similar to centipedes, and I think it’s millipedes that are often indoors, while centipedes will be outside. Millipedes are light brown and centipedes are apple green. Millipedes come from and live in damp areas, such as basements and drains. You might want to explore where the bugs are coming from, and if there is any dampness in the house. If there are holes that they are crawling through, you might want to plug them up, after taking care of the moisture and dampness.