Bob,
I have never used a compact rug shampooer so I can not vouch for their performance. I have read some favorable reviews on this forum about these mini units. I use a full-size home rug shampooer which has a separate hose for cleaner tight areas ( next to walls) and interior fabrics like chairs and couches. Works great for auto interiors. Cleans and almost totally dries fabric. Since the removable floor mats are usually the dirtiest, they require more solution and I too allow to air dry outside of vehicle for a few hours. Like many tools in our garages, a shampooer is not a often used item (unless you have kids and/or pets) but like a PC so nice to have in the ultimate detailer's arsenal.
Hope this helps you spend your money,
Edwin
