OMG...I'm ROFLMAO! I am the same way! I leave the stupid cleaning so long I'm afraid if I leave I might burn the house down! And I figure if I have to torture the pets then I should be here to endure with them.
As infrequently as possible....which is how I usually end up making a smelly afternoon of it!!
Oh, and a quick tip-if you are thinking about cutting a fat hog by cleaning an aluminum cookie sheet with oven cleaner, I'm here to tell you that it's a bad idea!! Mine is now a drip pan....