Test in a week, just a few questions

I've read a lot of the stuff out there about drug testing and stuff, and I've ran through the stickies here. I'm not going to ask, "will I pass my drug test if I weigh xxx and I'm 21" but what I'd like to know is has anyone taken this test Stop Teen Drug Use - About Us and used a masking agent over it?

I bought a product called Total Eclipse, Cosmic Cleanser, says the stuffs guaranteed. It's 4 cleansing capsules and supposed to be taken 30 minutes prior to testing, and the window is roughly 7-8 hrs.

The only thing that kinda scares me is that on the 1st test I took I failed, I did everything right... or so I thought... Water didn't help at all, I quit about a week before the test. I considered hiding a condemn filled with powdered urine between my runway (the area between your scrotum and ass hole), but not only have I not practiced, but when the test is given, it's in a cup and watched. Scary huh?

The test has an agent that's said to show up for the use of masking products, so if anyone can help please do. i feel like it's the countdown to extinction here...