I didn't have mice for a year because I caught one and then went crazy plugging up the holes. I caught one a few days ago and now I saw another one. I'm in Brooklyn NY, rat capital. Can someone give me advice on where it might be coming from. I live in a two bedroom apt, second floor. No cracks, holes that I can find. I'm very thorough. I have all the cabinet doors below sink taped up so they could not have come from there. Any advice is appreciated. I'm losing sleep over this. If anyone knows a professional in the area that can help please let me know.