wet driver carpets?

I also have an 05 Corsa design, with water puddling in front and rear driver side wells. It's been in the garage for 2 days and they can't find where the water is coming from. Seems almost impossible to dry out the heavy wadding under carpet. How can I lift front carpets just to get them dry? then i may go back to garage with suggestion of leak by pedals. Garage did not charge last time.