If you own a house sooner or later you are going to have pests!
I have had to deal with this problem since the very first investment property I bought!
In the short run I have had it under control. In the long run they always come back!
You must stay on top of them in an on-going basis. The same way you deal with weeds in the garden or a routine maintenance regime. Keep inspecting for them and keep doing the things that work to keep them away. The minute you stop is the minute they will start to come back.
Cut back shrubs, clear away debris and food that attracts them, set traps where there are signs of them. The list of things goes on and on. I can't think of any other remedy right now but if you have a specific question please call me so that I can give you my take on it.
When you start to have this problem it never really goes away. You must follow a regime of pest control to keep them forever away. Make it a routine just like cutting the grass and clearing the gutters.
The worst case I have experienced was from a family of raccoons. They did $9,000.00 worth of roof damage to one of my houses. Less than four months after I eradicated them, they were back trying to get into the same roof. Squirrels are an ongoing problem somewhere else I own. They have been a pain there for some 25 years. But I keep on top of them. Mice and rats well they present their own challenges. I can honestly say that I manage to woop them too.
I just can't stop! If I do, they win! The cost to property can be extensive!
I can't stop and neither should you if you have them! Call me if you need advise.
Just another important maintenance routine all property owners must do.