My propane heater which I like to get working again.... I have rodents living in it. I thought they were gone but... when I removed the gas pipes which are the heaters, and used a vacuum to clean it out. I noticed that there where some other next stuff. When I put hand up there to pull it down I heard some noise babies maybe. HELP how to remove them without a pest company, I sold the house and just need to fix some issues before Tuesday.