Flowtron Outdoor Products Division, the company designs, develops, manufactures and sells a select line of lawn and garden products. All products are proudly manufactured in the USA in facilities in Malden, MA, and Ft. Wayne, IN. Today Flowtron is a worldwide leader in outdoor products. Slow release cartridge contains 1 660 mg. of Octenol mosquito attractant. Makes your insect killer more effective in attracting and killing mosquitoes and biting flies. Pack of 6.