Here’s where you get serious. Grab a flashlight and get on your hands and knees. I know it’s awkward—your neighbors might see you—but do it at night. Find their highways. Look for that silvery, dried slime trail.
Seal gaps under doors with weather stripping. Fill cracks in walls with caulk. Check your window screens for rips. Slugs can flatten themselves into a crack as thin as a dime. Yes, they are basically living jello.
If you have a crawlspace or basement, dehumidify it. A simple $30 dehumidifier can do wonders. Slugs are 90% water. Dry air dehydrates them, and they’ll either leave or die. No water, no slugs. It’s that simple and that hard.
How To Get Rid Of A Slug In Your House at Janna Altieri blog
The “pet” solution: welcome a predator
I’m not suggesting you buy a snake. But if you have a garden, consider a couple of toads or frogs. They love eating slugs. And inside? A pet duck is overkill (and weird, unless you live on a farm). But a simple jar of nematodes—microscopic worms—can be watered into your soil to kill slug eggs outside. That keeps the indoor population down.
For indoor plants, let the soil dry out between waterings. Slugs love wet potting mix. Stick a cotton ball in the drainage hole to block them. Sometimes the simplest hack feels like a secret victory.
