Slow leak in air mattress

[Suddengeekgirl]

We have a double air mattress which has developed a slow leak. It was only bought last summer and has been used twice.

Help!
How do we find the leak?

Or is it better to just get a new one?

We are camping on Wednesday so need to fix it ASAP!

Pump it up and put it in a bath of water (it won't fit, so put one side in at a time) or pump it up and run your hand across it slowly. If you're using the bath you'll see the bubbles from the leak, if you're using your hand you'll feel air escaping. You'll need a puncture repair kit also.

Pump it up in the garden, get a bucket of soapy water and a hand brush and go up and down the seams, you'll see the air bubbling out where the leak is.

Thanks for that! :)
We've had a go with soapy water and found a hole. Dh has patched it with his bike repair kit so fingers crossed it won't deflate any more.