The only other assembly needed for that Flowtron was inserting the octanol cartridge, which slides easily in to the cartridge holder on the bottom in the unit. The cartridge lasts about 30 days and expenses about $15 for a replacement three-pack. Say goodbye to pesky flies and biting mosquitoes https://martinkwjsb.blog-eye.com/28930005/examine-this-report-on-best-bug-zapper-outdoor