Your first line of defense is a dry home. Slugs are basically water balloons with legs, so they avoid dry areas like you avoid a wet sock. Fix that dripping faucet, use a dehumidifier in the basement, and wipe down counters every night.
Next, check your doors and windows. Even a one-millimeter gap is a welcome mat for these sneaky gastropods. Use weather stripping or a tube of caulk—it’s cheap, easy, and gives you that satisfying “I fixed it” feeling.
Pro tip: Sprinkle diatomaceous earth (a powder made from fossilized algae) along thresholds. It’s like walking on broken glass for slugs—except it’s safe for pets and humans. They won’t cross it.
The Coffee Hack That Changes Everything
You’re already making your morning brew, so put it to work. Caffeine is toxic to slugs—it messes with their nervous system. Just don’t serve them a latte. Mix leftover coffee grounds into your garden soil or scatter them near entry points.
For an indoor barrier, brew a pot of very strong coffee, let it cool, and spray it along baseboards. It won’t stain, and it smells better than slug slime (which, by the way, has a faint fishy odor—thanks, evolution).
Fun fact: Some gardeners swear by beer traps—a shallow dish of beer attracts and drowns slugs. But you’re in your home, not a pub crawl. Reserve the IPA for yourself. Stick to the coffee.
How To Get Rid Of A Slug In Your House at Janna Altieri blog
