What is a Cat Safe way to deal with ants?

Diatomaceous earth, available at home improvement and garden centers, is a non-toxic, safe substance made up from crushed fossils of freshwater organisms and marine life. Crushed to a fine powder and observed through a microscope, the particles resemble bits of broken gl. Deadly to any insect and completely harmless to animals, fish, fowl or food. Most insects have a waxy outer shell covering their bodies. Diatomaceous earth products scratch through this shell causing the insect to dehydrate leading to eventual death.