Admittedly, slugs are not one of the cuter creatures in the world, and finding them in your home can be yucky. Still, they’re living creatures who don’t realize they’re inconveniencing us and don’t necessarily deserve a death sentence because we found them trespassing.
So what can you do when your home is invaded by slugs but you don’t want to break out the salt?
The most obvious answer would be to tackle this problem at its source. Why are they in your home and how are they getting in? The slimy trails they leave behind, as gross as they seem, might be the key to answering those questions.
If you can, try to follow the slime trails back to their entry point and then seal them up. It may help to find where the trail is leading to determine what is attracting them into your home in the first place. Are they visiting the pet bowls? House plants?
Fun Fact: the slimy trails your foe leaves behind could be what keeps it coming back. Snails have a great sense of smell. In fact, because they cannot see well and do not have ears, the smell is their most developed sense. They can smell the trails that they’ve left, as well as trails from other snails, and will follow them.
So, it’s not a bad idea to give the area a good scrubbing after you’ve sealed the entry points. Do the same outside.
Copper is a nifty trick that many gardeners used to keep snails away from their crops/plants. Lay copper stripping down in doorways, windows, cracks, and holes around your home. Snails will not cross over the copper line. Apparently, the copper reacts with the chemical make-up of a slug and gives them a shock if they try to cross it. This may not be considered “humane” but it beats the salt alternative, and they continue on with their lives.
Hopefully, this works well for you and you won’t have to resort to using baits or other methods that will kill the slugs. Remember that slugs can smell really well and may follow their trails back to your home, so it’s best to relocate them quite far away.
Good luck, and kudos for trying to find a more humane way.