I have a cleaning chemical that has taken the color out of my carpet is there any way to restore it and what do you do for dog urine in your carpet to remove the yellow stain?

Answer: If the color has been removed from your carpet, you may need to seek professional help. To best eliminate pet urine stain, you need to treat your carpet with a cleaning product that has enzyme action. The best of these also incorporate mal-odor agents that eliminate odor until the enzymes do their job. Enzymes take 24-48 hours to completely "eat" or digest away organic matter like urine. It is then gone - never to stink again!
In BISSELL's line-up, enzyme action is found in: BISSELL Pet Stain and Odor Remover™, Pawsitively Clean® ewww® and Enzyme Action Pet Stain and Stink Remover. When used properly, these products really delight our customers who have all but given up on getting rid of the smell of pet urine in their homes.
Once the enzymes have done their work for 24 hours, if there is any discoloration remaining from the stain, try BISSELL Stomp ‘N Go®, OxyPro® or OxyPro® Pet