We just moved into a different house. There seems to be an unusually high probability of insects entering the house compared to other houses. No infestation, but a lot of one-off incidents. The worst so far have been one wasp and a fist-sized grasshopper. This is definitely not normal.
I suspect that there is some entrance somewhere they're using to get access to the house, but I don't know where it could be or how to find it.
So how can I prevent bugs from entering, and also diagnose and fix any structural problems that may be allowing them to enter (like a hole in a door, for example)?