Just got this nice new Bissell shampoooooer for $100 which is bloody awesome and mainly bought it so I could make my car like new. Will this be perfectly fine to use on my seats if I let them dry out for the day or will it make them rot and stink? I figure I would do it myself rather than pay someone to do it just once who may not even do a good job. I pretty much want to know your guys experiences with this.

As long as you let everything dry out you should be fine. Leave the doors open if you can (garage).

Can I use it on the cloth thats on the doors like on the sides? Because there a lot of stains there.

Yes. Make sure to get everything dry.