So you got a hole in your air mattress eh? Thankfully there’s an easy way to fix it. The first step is to…
Find the escape. Mix liquid dish soap with water in a spray bottle. Inflates the mattress. Hear the sound of the air coming out. If you do not find the leak, spray water with soap from the bottle on the mattress. If you see bubbles forming with the soap, there is the leak.
Clean the mattress with a cloth. Circle the leak in a circle with a marker so you can locate it later. Deflate the mattress until it is loose but still have air inside.
Thread the needle with a good piece of thread. The thicker thread will seal the leak better, so try to use rather thick thread.
Apply a thick layer of inflatable mattress adhesive to the yarn. Inflatable mattress patch kits contain this adhesive. Put a drop of adhesive in the leak as well.
Take the sharp end of the needle with the tweezers. Put the needle through the hole. The end of the eye of the needle must pass first there. Press the needle and insert the thread as deep as you can. The adhesive on the thread will help cover the edges of the hole.
Pull the needle out of the hole. Leave about one inch (2.5 cm) of thread inside the hole. Cut the thread so that it is 1/4 inch (60 cm) hanging from the outside of the mattress. The adhesive and the thread function as a stopper.
Wait a couple of days before re-inflating the mattress.