These bug control bags are designed to be used with the Beetle Bagger Japanese Beetle Trap kits. These traps will securely catch Japanese Beetles. The curved, hourglass shape of our disposable bags thwarts thousands of beetles from escaping back into your garden. To replace a bag, grasp the neck of the bag firmly in one hand & detach at each vane hook with the other hand. Attach the new bag to the hooks on the sides of the lure holder. Using disposable bags will reduce your contact with the beetles. They’ll be trapped in the bag and you won’t have to touch them.