Toss some mothballs in the attic, the crawl space, or around the yard and the pests will stay away — it’s one of the most common pieces of DIY pest advice passed around Tallahassee. It’s also mostly wrong, and using them the way people do is technically misuse. Here’s the honest answer.
The short version
Mothballs don’t reliably repel roaches, rodents, snakes, or most pests, and scattering them around your home or yard is off-label use of a pesticide. Mothballs are registered for one purpose: killing clothes moths and their larvae in a sealed container, where the chemical vapor builds to an effective concentration. In open or ventilated space — an attic, a garage, a yard — that concentration never builds, so they don’t do the job.
Why they seem to work at first
When you first put mothballs down, the strong smell may make an animal or insect avoid the area for a few days. That’s just long enough to convince you they worked — right before the pest habituates to the smell (especially with food, water or shelter on the other side) and carries on.
The real problems: mothballs off-gas naphthalene or paradichlorobenzene — chemicals you don’t want vaporizing in your attic, garage or living space, especially around children and pets. They do nothing about entry points. And they create a false sense of security while the problem grows.
Other remedies in the same category
Peppermint oil, dryer sheets, ultrasonic repellers, and “bug bombs” all share the mothball pattern — plausible, popular, and unreliable. See do ultrasonic repellers work.
What actually works
Real pest control in Tallahassee comes down to things a smell can’t do: sealing entry points, removing food, water and harborage, and targeted treatment or baiting that reaches the nest or colony. It’s more work than tossing a box of mothballs in the attic — which is exactly why the myth persists — but it’s the difference between a fix and a smell.
Quick answers
Will mothballs keep roaches or rats away?
Not reliably — in open spaces the vapor dissipates and pests habituate. And they never seal the gaps pests use to get in.
Are mothballs dangerous to use this way?
Using them scattered in open spaces is off-label and releases chemicals you don’t want to breathe. It’s a poor trade for a deterrent that doesn’t hold.
Is there any DIY that helps?
Yes — removing food/water/harborage and sealing entry points genuinely reduce pests. Scent repellents don’t clear an established problem.
Skip the mothballs and fix the real gaps. Book a free inspection and we’ll show you where the pests are actually getting in.
Dealing with this pest right now?
See our pest control services in Tallahassee and pest control prices in Tallahassee. A free inspection identifies the pest, the entry points and an exact quote — in writing, with no obligation.
