What type of trail do slugs and snails leave behind?

Slugs and snails leave behind a mucous trail as they move, which is a key identifier of their presence. This mucous serves multiple purposes: it helps the creatures to move smoothly along surfaces, provides hydration, and offers protection against desiccation. The trail is typically shiny and can be especially noticeable on surfaces like soil, leaves, or patios.

The characteristics of this mucous trail make it a vital aspect of identifying slug and snail activity in an area, as it can lead to their presence even when the creatures themselves are not immediately visible. This knowledge is important for pest control operators in determining the extent of slug or snail infestations and planning appropriate control measures.