Had issues with insects and birds,discovered that either like WD40. Birds taking a toilet break on a aerial mains supply cable going past a camera, camera activation plus visit cards on the floor below.Dual evidence who's done it.From camera and the floor.
Used the "tube" inserted in the nozzle of the can and spray reached to the top of the aerial cable. Flies nesting in cracks around camera another one, sprayed the crack in the timber wall, lasted for a year plus.
Internal with possums and other small animals in roof/ceiling space, purchased a metal can with proper moth balls. punched a number of small holes in it and left in ceiling space or wall girders in sheds.
Good Bye Possums and rats. Good for the movement cameras as well as for movement detectors connected to the security system