BioLogic Ecomask Beneficial Nematodes, 25 Million Steinernema carpocapsae (Sc) Nematodes for Natural Flea Control NATURAL PEST CONTROL: An all-natural alternative to chemical insect pest control SAFE FLEA CONTROL: Kills flea larvae in the soil without exposing your family and pets to chemicals TOP QUALITY NEMATODES PRODUCED IN THE U.S.A: Shipped in an insulated box with ice to ensure quality EASY TO APPLY: Apply with watering can, pump sprayer, hose end sprayer, or Nema-Jet Sprayer TREATS 1000 SQUARE FEET