One of these septic-safe Plink balls cleans your garbage disposal and refreshes your sink with a long-lasting lemon scent. Plink your sink to rinse away the smelly grime and food debris clinging to your disposal and fill your entire kitchen with a fresh citrus fragrance. A quick, mess-free solution to foul sink odors, these biodegradable cleaning balls do the dirty work and keep your hands out of the garbage disposal.