Fully inflate the air bed
Listen for hissing sounds
Feel around seams, valves, and the underside for escaping air
Press your hand slowly over the surface to detect airflow
Wet your hand slightly and move it over the bed to feel for cool air
Mix dish soap and water
Spray or wipe the soapy water over the bed
Look for bubbles forming at the leak
Check the valve for leaks first
Inspect seams and corners carefully
Submerge small sections in water if possible
Mark the hole with tape or a marker
Reinflate and recheck if the leak is hard to find