[DolcesMommy]

Hmmm. That is what I read in the book. Maybe see if Barnes and Noble has the book. It is under the housetraining section. Here is a good website too

http://www.justrite.com/

Q. Why should urine be treated as soon as possible?
A. Left untreated, you may wind up with a difficult to remove yellow stain, or worse, a dye loss. Over time urine salts become highly alkaline, and can bleach out your primary carpet dyes, starting with the weaker red and blue, so that you are left with a yellowish or off white discoloration. At this point, your only options are to dye, or section (patch) the carpet. Even our kit, which contains highly effective stain removal ability, see testimonials cannot claim to remove stains that have become permanent, and of course a dye loss can only be corrected by re-dyeing.
NOTE: Never use hot water or vinegar to treat urine stains. You will set the stain.