when cats and martens reach garage roof and roof over the neighbor's hedge, you are looking for there not only by birds' nests but also addressed some damage. Marder can inhabit the house roof. Once found the way you get it again. Beeper and odors brought nothing. Then I screwed the bird control spikes on wooden slats and since then there was no more martens there. It is important that you know the entrances and exits. Then can be prevented with a few bird control spikes. Once it gets the animals uncomfortable, they stay away. My tip: two or three rows behind each mount. Make sure that no channels are formed by the can crawl through the Marder. For this one can bend individual spikes. At the front of the bar screw on a Spike series. The whole placed on the garage roof edge with flat roof garages gives an almost insurmountable barrier. And from now on, the birds can feel safe again on the roof and under stay contamination by Marder and cats and you need no longer afraid of unwelcome lodgers to have. After a long search and many attempts I finally found the solution.
