With summer here, my house is really starting to warm up. However, the roommates are loath to turn on the air conditioning quite yet, but I don't want my rats to be uncomfortable. So I have two questions:
First, how hot would my house need to be before I should force the air conditioner to be turned on? At what temperature do rats begin to experience problems due to heat?
Second, any suggestions on how to keep my rats cool? I've stolen the idea that someone mentioned to put a frozen bottle of water in there during the day, and the rats do enjoy licking the condensation off of that. I also just built a rat bean bag that they will hopefully lay on and not eat. I see them laying on the cage bars every once in a while and it just makes them look dead. Are there any other things I could try?