I cover the tubs with blankets so that it's completely dark. The fact is, you don't have to brumate to breed. I've just found that if I don't brumate, I have trouble getting them to hook up and the clutches don't have the high fertility that the brumated animals do. However, the ones I didn't brumate were first time breeders so that is also a possible factor for fertility. I'd suspect in some parts of FL, snakes never brumate and are active year round. This was true of California as well. Unless it's very cold, you can find snakes out in winter time if there were some warm days. You might call Kathy and see how she brumates her snakes. She's in a warm area of FL as well. She might cool using air conditioning or something though.