Product Description: Completely portable, this lightweight propane-powered fogger is the most economical way to kill mosquitoes, biting flies, and flying insects. The secret is in the microscopic particles it produces - up to 7 times finer than mist! The fog floats and penetrates deep into landscaped areas where mosquitoes hide - killing mosquitoes on contact and creating a 'mosquito-free' zone for up to 6 hours. In about 5 minutes, the fog is gone so you can start enjoying the outdoors again. Takes an average of 10 minutes to treat a 5,000 square foot yard. Use before backyard picnics, barbecues, outdoor parties and special events. This is the same effective system used by professionals to kill mosquitoes. The Burgess 1443 Propane Fogger features a 40 oz. reservoir and requires a standard propane cylinder (not included). Also has a trigger lock prevents accidental dispensing of insecticide. For best results, use only with Black Flag, Cutter, or Repel branded Fogging Insecticides. For outdoor residential use only.