Starter Kit Includes: (4) Gnat Fly Ball trap, (4) inflation needle, (1) Catch EM' brush-on sticky coating Coverage Per Half Acre: Takes 2-3 Gnat Balls to effectively cover 1/2 acre and eliminate gnats, aphids whiteflies, house flies, no-see-ums, love bugs, and more flying insects Sticky Coating: Bug Trap is designed to work with Catch EM’ sticky coating (included); Catch EM’ is an odorless bug killer with zero pesticides or electricity needed to kill those irritating biting insects; Safe to use around children and pets Ball Traps Work Great For: Greenhouses, pool areas, backyards, gardens, animal stables or shelters, orchards, barns, cabins, and many more places with it's heavy-duty, weather resistant PVC material Easy Fly Trap Setup: Inflate ball, coat with Catch EM sticky coating and hang; Most effective to hang ball approximately 4-5 feet off ground in the sun adjacent to the shade and re-apply Catch EM' every 2-3 weeks; Every ball trap has a loop molded onto top - enabling it to be hung from a tree or pole Invented in 2017, Bug Ball creates a no Deet, no harmful chemicals, and no electric solution to fly problems. It’s design uses the natural attraction flies have to moving black objects and CATCH ‘EM, our exclusive, organic sticky coat adhesive. Each Ball is made from PVC, making it durable and weather resistant. The molded loop on the top allows for hanging with or without a rope. The molded loop on the top enables it to be hung from a tree or poll with a rope or to be hung from a shepherd’s hook. It is most effective to have the ball suspended approximately 4-5 Ft. off the ground. The ball is designed to work with Catch EM' sticky coating (included). Catch EM' is an odorless Green bug adhesive with NO harmful chemicals or electricity needed to get rid of those irritating biting insects. Catch EM' is also safe to use around children and pets. It takes 2-3 Bug Ball’s to effectively cover 1 acre and works great in green house, pool areas, back yards, gardens, animal stables or shelters, orchards, barns, cabins, and many more places. Green and odorless, the Bug Ball can be used anywhere without fear of harm to humans or animals.