How to stop mice and bugs from coming through attic ceiling vents
Ceiling openings and high gable vents can allow mice, bats, and wasps to enter living spaces from the attic or outside. Because these openings are often hard to reach or inaccessible due to physical limitations or high heights, homeowners struggle to safely inspect them or treat nests without risking dangerous ladder work.
What the numbers show
Counted from the threads quoted below. How we count
- The most recent one is from October 2026.
- This comes up 18.4× more often in r/Pestcontrol than across the site as a whole.
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.
- 1installing a metal grate or mesh over the openingDid this help you?
- 2Leaving the nest alone until winter kills the waspsDid this help you?
- 3Using a telescoping extension pole with an attachment to spray the nest instead of using a ladderDid this help you?
- 4Hiring a handyman for small gapsDid this help you?
- 5Calling a garage door specialist if doors need replacementDid this help you?
- 6Installing bait stations and traps independently using a pest control company approachDid this help you?
- 7Checking the soffit and vent screens for gapsDid this help you?
- 8Asking the builder to inspect ventilationDid this help you?
- 9Ruling out a dead animal before sealing anythingDid this help you?
- 10Placing down mouse trapsDid this help you?
- 11Trying to locate vent coversDid this help you?
- 12Using HVAC putty around pipes and cablesDid this help you?
- 13Packing copper mesh into gapsDid this help you?
- 14Applying fire-rated foam or caulkDid this help you?
- 15Using silicone or tapeDid this help you?
- 16Securing chicken wire or stainless mesh (hardware cloth) to the vent opening.Did this help you?
- 17Having a handyman repeatedly replace compromised soffitsDid this help you?
- 18Hiring a wildlife company that performs exclusions, covers areas in steel mesh, and leaves a one-way door for existing rodents before final sealingDid 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.
“Saw this lad running in the vents above my bed. Placing down mouse traps immediately and trying to locate vent covers. Any other precautions i can take?”source ↗
“This is a gable vent about 25 feet high on my house. I have not seen wasps enter the house, and I don’t have access through the attic to this space. Thoughts on getting on a ladder and spraying through the vent to cover the nest, or should I just let it be and expect a Minnesota winter to kill them off?”source ↗
“I am tired of having a handyman replace soffit that has been destroyed or compromised by rodents, only to see the replaced soffit destroyed or compromised again less than a year later.”source ↗
“I would like to hire a person or a company to put 1/8-inch galvanized steel mesh—also known as #8 hardware cloth—that features 27-gauge hot-dipped galvanized steel, small 1/8-inch openings, enough to affix to all of my soffits”source ↗
“I would do it myself except that I am currently fighting rectal cancer using immunotherapy, which makes me very tired most of the time and more susceptible to sun exposure and skin cancer”source ↗
“I’ve been trying to track down where these camel crickets and mice can possibly come from.”source ↗
“Would it be wise to use an hvac putty around these pipes a cables to cover the holes as a possible deterrent? Rather than just leaving them open.”source ↗
“What would best be done to seal the holes the cabling comes through? HVAC putty, caulking? What else?”source ↗
“Here’s a photo of my foundation vent that I’ve never noticed until now which may be allowing rodents in the crawl space.”source ↗
“I have not seen any in the home but want to fix this asap. Any DIY friendly suggestions on sealing it?”source ↗
“I'm disabled and can't get up there to see.”source ↗
“I'm concerned if mice or bats are in my attic, they will move into my closet through that opening.”source ↗
“Do I have to get under the crawlspace to do this or can I do it from outside? Also what how to secure the wire to the actual foundation?”source ↗
“What type of contractor would I call to seal up my garage to prevent mice and voles?”source ↗
“Ive got gaps running all the way up the sides of my garage doors. Also seems like near back of garage against house foundation also some holes where they probably get into walls and such.”source ↗
“Do I try to get lucky with a random handyman? garage door guy? general contractor? pest control company?”source ↗
Where this came up
People with this problem also raised
- 2How to keep bugs away from front porch light
- 3How to keep bugs out of windows without screens
- 18How to permanently stop bugs coming out of a wall crack
- 17How to keep palmetto bugs from coming upstairs from the attic
- 4How to stop birds from nesting in high dryer vents without cleaning a clog
- 5How to stop mice in the roof while waiting for traps