Flies like heat, light, low wind and are attracted by odors, and usually enter a building through open doors and windows near garbage and food. Trap flying insects. No pollution, no fumes and no chemical odor. Attracts and holds. Use as much or as little as needed. Just hang and cut off when full. How to Use? 1:Bring to room temperature before opening 2:Grasp cord in one hand;grasp tube in the other 3:Pull out cord slowy while turning tube in a counterclockwise(twirling)motion,Cap will pop out.Remove thumbtack from top of cap and save for hanging.Discard cap. 4:Remove completely from tube or let tube dangle from strip as an anchor.Hang with thumbtack or cold. 5:When strip is full for fly control is achieved,remove from hanging device and discard.