Is it safe to spray bug killer into walls with electrical wires?
Spraying liquid insecticide directly into wall cavities containing fiberglass insulation and electrical wiring creates serious risks of electrical short circuits and chemical saturation. Because carpenter ants nest deep inside these hidden spaces where baits like Terro only kill foragers, homeowners are forced to choose between risking unsafe DIY wall treatments or paying for an exterminator on top of costly old-house repairs.
Core Friction Pattern
Analysis of 2 peer accounts across online developer and community forums reveals that “Is it safe to spray bug killer into walls with electrical wires?” repeatedly surfaces due to edge-case mismatches between standard defaults and real-world environments. Standard troubleshooting frequently falls short, compelling practitioners to develop custom workarounds.
+5 alternative community-tested workarounds cataloged below.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
Is it safe to spray bug killer into walls with electrical wires?
- 1Spraying the inside and outside perimeter with AlpineDid this help you?
- 2putting down Terro ant baitDid this help you?
- 3spraying insecticide with a wand into foundation cracksDid this help you?
- 4sealing holes with expanding foamDid this help you?
- 5patching cracks with mortar caulkDid this help you?
- 6spraying insecticide along indoor baseboardsDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Bought an old house (1895). There's definitely gaps in the siding and foundation where they're getting in and I've been working on that.”source ↗
“I've been putting down Terro since we closed on the house nearly 3 weeks ago that seemed to work at first, then a whole new wave of ants appeared so I must've just wiped out one of the nests.”source ↗
“My mom is acting like this is a HUGE deal and I ABSOLUTELY need to get an exterminator.”source ↗
“is it worth an exterminator? I already have a TON of work to do on this house so I don't know if it's worth spending money on that.”source ↗
“Do you still spray Raid Ant and Roach into a wall that has insulation and electrical wires?”source ↗
“with so many coming out of that outlet suddenly at once, I’m guessing it’s a good idea to spray in the wall as well? What I’m concerned about is that wall cavity having fiberglass insulation and electrical in it and if that’s still safe?”source ↗
Where this came up
People with this problem also raised
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- 6Exterminators won't treat cluttered or unsanitary homes
- 8How to stop mice and bugs from coming through attic ceiling vents
- 18How to permanently stop bugs coming out of a wall crack