I have a litter of puppies that are 4.5 weeks old. Eatin and poopin is what they do. I have them in my shop which is not insulated or air conditioned except by a small portable AC, therefore have the shop doors open a bit to allow the air to flow. My problem is flies. There are quite a few in and around the box and excercise area for the pups. I clean 3+ times a day but those little devils (puppies) are spilling their food and discarding their food from the other end constantly. Thus, the flies. Not terrible but more than I would like. I have the sticky fly catchers up but that doesnt get a lot. I'm cautious when it comes to chemicals around the pups. I had a suggestion of removing the pups for a couple hours and cleaning everything like I do already and then spraying a bit of Tempo and letting it dry. Does that sound ok? Do any of you have any other suggestions?