Hi!

The key to lifting organic stains is chlorine, the higher the concentration in the stained area - the more quickly it will lift. Unfortunately, high chlorine levels are bad for liners. Mbar is the resident stain expert, I'd suggest searching the site for stain removal tips. (IF you want to spot treat the area, I'd use cal- hypo in a kneehigh and keep a close eye on it!)

I don't mean to be terse, but my computer is giving me LOTS of trouble of late and I'm trying to keep my posts short and sweet.