The only real other assembly required for that Flowtron was inserting the octanol cartridge, which slides very easily in to the cartridge holder on the bottom in the unit. The cartridge lasts about thirty times and costs about $15 for any substitution three-pack. Help rid your garden of bothersome https://spencerjmooq.slypage.com/29186118/the-flowtron-bk-40d-electronic-insect-killer-diaries