Woodlice love moisture. They’re like tiny, leggy vampires that feed on dampness and decaying plant matter. If you see them, it’s a sign that your home might be a little too humid or that you’ve got some rotting wood or damp leaves nearby.
They’re not trying to be rude. They just saw a nice, wet corner and thought, “Ah, paradise.” Your job is to make paradise feel like a drought.
Step 1: Cut the water supply (and their tiny water park)
Grab a dehumidifier, open a window, or just air out your home like you’re airing out a sweaty gym bag. Woodlice can’t survive in dry environments. They literally shrivel up and die of thirst—dramatically, I imagine.
Check for leaks under sinks, around pipes, and in basements. Fix any drips. Even a tiny puddle is a woodlice resort. No free spa days on your watch.
Also, wipe down damp tiles after a shower. That steam is basically a welcome mat for them.
Step 2: Block the door (a.k.a. seal the cracks)
Woodlice are tiny acrobats—they can squeeze through cracks you wouldn’t believe. Grab some caulk or weatherstripping and seal gaps around doors, windows, and baseboards. Every. Single. One.
Check the bottom of your exterior doors. If you can slide a piece of paper under it, a woodlouse can roll through. They’re like tiny ninjas with exoskeletons.
Oh, and don’t forget vents. Cover them with fine mesh. You don’t want a woodlouse parade marching in from the garden.
Step 3: Declutter their hiding spots
Woodlice love hiding under pots, piles of damp newspapers, or that one box of old sweaters you’ve been meaning to donate since 2019. Remove the clutter, remove the woodlice.
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Move firewood, bricks, and garden debris away from your home’s foundation. They use those as staging areas for their invasions. Think of it as cutting off their supply lines.
Inside, keep cardboard boxes off the floor. Cardboard is like a five-star hotel for woodlice—it’s dark, cozy, and edible. Yep, they’ll nibble on it.
Step 4: Use natural repellents (no harsh chemicals)
You don’t need bug spray that smells like a science lab. Try diatomaceous earth—it’s a powder made from fossilized algae that looks innocent but is actually a microscopic death trap for woodlice. Sprinkle it along baseboards, under sinks, and near entry points.
Woodlice walk through it, it cuts their waxy coating, and they dry out. Sounds brutal, but it’s all natural.
Also, try essential oils like peppermint, tea tree, or citrus. Mix a few drops with water in a spray bottle and spritz around problem areas. Woodlice hate the smell. You’ll just smell like a fancy spa.
Step 5: Remove their buffet
Woodlice eat decaying organic matter—damp leaves, moldy wood, dead plants. If you have potted plants with wet soil, they’ll feast. Don’t overwater your plants. Let the soil dry out between drinks.
Clean up any dead leaves or mulch near your foundation. They see that as a salad bar. “Ooh, a slightly rotten fern? Don’t mind if I do!”
If you have a compost pile, keep it far from the house. Woodlice love compost more than I love a good nap.
