1- Make sure the wife is not at home.
2- Obtain Bath Towel, or Beach Towel depending on size of resident Puddy' Cat.
3- Locate the Sleeping Feline, Cover him/her with towel and roll into a tightly wrapped but well secured package.
4- With suspect Air-Mattress, Pool (Whatever) inflated to max. move captive Felines around entire inflated area.
5- The Felines eyes will register a rapid movement directly proportional to any leak sensed.
Warning!! Using any subject over 1 yr. in age could result in the leak checker becoming totally useless.(As a leak testor or house-pet) I'm told it's something to do with their internal pump overloading...
6- After testing is complete, take the wrapped package and unroll it in a remote room away from anyone that might have observed any portion of it..