I'm terrified of such cracks cause I immediately understand that it was done by rodents. I had the same problem recently. I didn't know what to do, looked for advice on the Internet, but was afraid to do anything myself, and found
a service in wildlife fishing and turned to them for help. It took a while, but the experts caught the creators of my problem and successfully solved this issue. It took a time, as it was necessary to make sure that all the mice were caught. The space was quite inconvenient for catching.