Do they ever test you the same day as an interview?

[Deige]

well then it was a good masker...smoked 6 hours before my surprise test and I passed no problem.

It didn't mask the THC either, you merely diluted your urine enough to bring the thc levels below the drug screen cutoff. You could have poured out the $50 potion and filled the bottle with water, followed the instructions and accomplished the same thing.