screws into top carfull of glass 2 inch 2 in bottom if sides are to wide use ply wood with carrige bolts on out side nuts on inside calk will also slow them down

there are motion sensors and audible alarms that run on batteries that can be bought to solve the issue. These usually work on contacts that, when broken, complete a circuit and trip the alarm. Install is a simple attachment with screws.

Hope this helps

Attach four timber rattlesnake rattles and one diamond back rattle to 5 sticks. Use approximately 4 inches of string, or enough to have them fully in the air flow. This will definitely stop all intruders, even rats.

Also, is best to have 4-6 “buttons” per rattle.