It takes ages to dry out the front carpets so get them out of the car, left inside they could be damp for weeks!
Not much under the drivers feet to be honest, mostly ventilation ducts and a bit of wiring.

Cat litter in trays or inside tights absorbs smells and moisture ! Just font leave the doors open or all the local cats will be in there 😁

Inside a pair of tights? I don't want to know how you know that!