“The buildup of bat guano, or feces, can accumulate ... oily stains on the side of your house where they’re rubbing up against it as they enter. You also may find droppings on the side ...

One case is related of the Hon. Jamei PeaTce, who first applied guano in 1845, at th( r?e of 550 lbs. to the acre of very poor land It was applied as a top dressing mixed wit! plaster, for a crop ...