If you’ve done everything above and they’re still throwing parties, you can try diatomaceous earth (food grade!). Sprinkle a thin line of this white powder along baseboards and entry points. It’s like microscopic shards of glass to them – they walk through it, get dehydrated, and die. It’s safe for pets and kids, but don’t inhale the dust yourself. It’s messy, but it works.
Don’t reach for bug spray first. Woodlice are resilient, and sprays just poison the air in your home. Instead, try a simple trap: a damp rolled-up newspaper in a dark corner. They’ll hide there for the moisture, and you can just toss the whole thing outside in the morning. It’s oddly satisfying.
Pesticides are the nuclear option. Use them only if you have a massive infestation that won’t quit. But honestly? If you have that many, you probably have a serious damp issue that needs a contractor, not a can of Raid.