While back posted a link in another thread about TCW.
Apparently the enzymes, bleaching agents and other chemicals in TCW really are designed to work in cool/cold water. In this rare case hotter water temps,even "warm" actually can impede the cleaning performance of this product. CR's testing bore out this fact in that their results were best in cold water, and not so good in hot water. Just noticed the other day on the inside of my TCW box it does say the product give great cleaning in hot, warm or cold, but cold water is best.
Took out the Hoover TT yesterday to soak a large white linen tablecloth covered in food,red wine and other stains that had been sitting for several days. After one hour of soaking the entire tablecloth was CLEAN, clean I tell you; not a trace of spots or stains.
Now if P&G would come out with a scent free version of TCW, I'd be in heaven.