Here’s a creepy one: your vents. Exhaust fans in the bathroom or kitchen are not fly-proof.
They have little flappers that are supposed to close. But dust builds up. A flapper gets stuck. Boom—you’ve got a fly portal from the outside world into your shower.
Imagine that. A fly took a dark, dusty tunnel ride just to meet you in the bathroom. Dedication.
The Foundation: Your Home is a Sponge
Homes settle. Concrete cracks. Pipes have entry points. This is where the pros come in.
House Fly Drawing
Flies don't need a door. They can follow a pipe from the ground into your basement. Then up through the floor.
If you have a crawlspace, consider it a fly daycare. They party down there, then explore upward.