There is no evidence that such remedies actually work, yet they are repeated in every time and place. Careful perusal of the lawn, especially when the lawn has recently been cut, will often reveal new tunnel activity or even the actual working of the mole in progress. Do not place sod or topsoil over damaged tunnels until you re certain the mole has left the neighborhood. If you can, try to trap moles at the first sign of damage, after the fall rains or in early spring, when you re likely to trap pregnant females, thus avoiding the feeding of a whole new generation of this ubiquitous pest in your yard. Such anecdotes appear to have some truth to them, although verification is difficult to come by.
Debate is hot on the subject.
Most experts seem to think so, but bat droppings, when a nearby colony has taken over a gable or between roofing tiles, can literally smother a patio or deck that is placed under trees. That is because bats come out at night, often roosting in high tree branches, and their leavings are pretty disgusting, as well as dangerous. Never handle bat droppings. Use plastic gloves to sweep them up and discard carefully as some diseases can be carried in bat excrement. While bats to not damage wood or chew on wires, as mice do, they are pretty frightening to see.