https://groupextradiscount.com/story/12672/ Additionally, when ants trek through coffee grounds searching for food, nitrogen within the used coffee grounds will burn the ants' legs, deterring them from walking across. Aline Rifflet1, Nathan Tene1, Jerome Orivel2, Michel Treilhou1, Alain Dejean2,3, Angelique Vetillard1*. Mon, 11 Aug 2014 22:32:54 EDT en