I was given a large igloo dog house today. It has ventilation on the roof as well as the bottom and I am planning on using hardware cloth on a wood frame for the door. I live in Florida so heat is more of a concern than the cold. The igloo will be in the shade and will house 2 silkies. They will only be in it to roost at night. Will that be sufficient ventilation for them? If not suggestions on what to do. Also, this igloo was left out in the elements for years without ever being cleaned. I have scrubbed it with everything I can think of and it's still showing the discoloring in spots. Any suggestions? Can I paint it? I really don't like it being white, not camouflaged enough for me.