XXclean ????

Can anyone tell me what is this mean "works up to 5 hours"?
I've been clean for a week now and don't plan to do anything :(
I drink a lot of water and walk 5 miles a day :)
If I drink XXclean now, but my UA is later in Feb., will I still have clean UA after lets say 10-20 days? How well does it work?
I want to do it in advance, give me peace :)

those detox drinks are only meant to be used right before the test. drink it about an hour and a half before the test. there arent any drinks gauranteed though no matter what they say.

They've been pretty hit and miss from people that have posted here. The money would be better spent on subbing.

thanks guys, it's helpful :)