why are slugs coming in my house at night

Slugs come into houses at night primarily because they seek dark, damp environments that provide moisture, some warmth, and shelter. They are nocturnal creatures and use the cover of darkness to move around. Slugs can squeeze through tiny gaps or cracks in walls, doorframes, vents, or holes for utilities since they have no skeleton and can contort their bodies. Once inside, they are drawn to moisture-rich areas like bathrooms or places where pet food or food debris might be present. Their slimy trails, which they follow, can lead them back into the house each night. This behavior often indicates damp conditions in or around the home, which slugs find favorable. While generally harmless to the structure of a house, their presence can indicate underlying moisture or mold issues and they pose a risk to pets through parasites carried in their trails.