This is my favorite secret: put out a damp piece of cardboard or a wooden board in your garden, far from your house. Slugs will congregate there during the day because it’s dark and moist. Then, every morning, you can relocate the whole party—be it to a field or a bucket of soapy water.
How To Stop Slugs In The House (step-by-step Guide) | TAFT Independent
It’s like setting up a nightclub for slugs, and then being the bouncer who kicks them out. Very satisfying.