Published February 7, 2013 at 400 × 266 in Grooming Helps Insects Keep Their Senses Sharpened Cockroaches groom their antennae by using their forelegs to place the antennae in their mouths; they then methodically clean the antennae from base to tip. Photo courtesy of Ayoko Wada-Katsumata. (Visited 20 times, 1 visits today)