Key Points Dryer sheets don’t reliably repel mice—think of them as weak deterrents, not real barriers.Watch for droppings, ...

They are too heavy for mice to move and can prevent them from entering. 18. Fill small holes with dryer sheets. Dryer sheets ...

Plus, we get into how rats are much more discerning than mice—and thus harder to catch—and why you should never, ever use rat poison. Our ethical, effective solutions to a mouse problem.

Dryer sheets don’t reliably repel mice—think of them as weak deterrents, not real barriers. Watch for droppings, chewed insulation, grease marks, pet behavior changes, and a sour smell.