Finding Hole? I am wondering what the best method is for finding a hole...

I am wondering what the best method is for finding a hole on an air matress. I want to find the hole so I can patch it because right in a minute the air escapes overnight almost disappearing nothing. Thank You within advance.
Answers:    Use duplicate methods you'd employ within order to find the source of an nouns leak surrounded by an automobile tire. . To find leaks contained by your sleeping pad or nouns mattress:

1. Cover the surface of the mattress with a mixture of dish-soap and dampen (spread or spray). Start with any spots you believe the dribble to be coming from. To minimize the mess, I'd suggest doing this over the bathtub.
2. Open the tap and let your mattress inflate. Blow a couple of breaths into it to slightly over-inflate and next close the valve. Watch for any bubbles coming from the leak(s).
3. If needed, fold the mattress surrounded by half or thirds. Once again, monitor for bubbles.
4. Repeat until source of leak is located.
5. Circle the leak(s) near a waterproof pen or float.
6. Rinse and air dry the mattress.
7. When it is dry, deflate it & close the spout.
8. Spread some urethane glue over the hole to cover.
9. Open the spigot. As the mattress inflates, it will draw glue into the pinhole, making a long-lasting trademark.
Good luck. :)
put it in dampen