@Weathergirl5 : I never remember that because I buy the ones that are supposed to last for 10 years, Well, more like I used to buy the 10 year ones that are lucky to last any longer than a cheap WalMart one. Another good idea is have a way out planned. We have trees at the upstairs bedrooms except for one but I don't think the pups can climb down the tree. I guess we would have to wrap them in a sheet and lower it down first. I'm not leaving them!