^ No, you don't need to use any special equipment. UCD uses a hot water carpet extractor, and they work absolutely fantastic. BUT, you have to rent one. I'm not sure about other Provinces, but here in NB they cost $75 + tax to rent, and of course you have to go pick it up and then return it. IMHO, too much cost and bother. For customer vehicles and also my own, I simply use a 50/50 mix of hot water and vinegar and a shop vac. Never had a salt stain that I couldn't remove yet. Just my .02 cents.