I have a peace lily that I kept outside over the summer, and brought in in the fall (Ontario). I am continually finding fairly large (0.2 - 1 cm) new holes in the leaves, but I can't find any pests on it. There are no eggs or other marks on the leaves, and the plant is otherwise healthy. Could it be a nocturnal slug that's hiding in the soil? Any other guesses? And how can I get rid of whatever is eating it?
