Hi Don,
Sorry it took me a while to respond. I believe that I can get the Big D Odor Removal from amazon, so I got that covered

When I go to the used car lots and do the free demo, would I use a whole can per car? Does the vehicle's A/C unit need to be on for better results? Do I need to vacuum the car first or just use the Big D Odor can as the vehicle is? Is this a one time service per vehicle? after the process is done, Do I need to recommend the owner to let it sit for a few hours?. Any tips on the selling strategy? for example how to negotiate or ask for more business? and also, any selling points to focus on?
Don, I apologize as I may sound a little paranoid but like I said earlier I am in a tight situation right now and I really need to make this work. Thank you again for being very generous with your help and time. God Bless.
Jovany