How long does it take for Diatomaceous Earth to work?!
My neighbor's dog gifted my apartment with fleas. Three days ago, I swept (hardwood floors) then sprinkled Diatomaceous Earth everywhere. They are still here in full force, nipping at my ankles. Grrr. My neighbor suggests I try boric acid, but is it going to work any better/quicker than DE? (I looked in the archives, btw, but didn't see anything about how long it takes DE to work. I only saw that it was recommended (or not). Also, I do not have any pets myself.)