Drug Test in a few days, best way to get clean?

I smoked yesterday and apparently got a call earlier asking for me to come in to a interview on Wednesday, but I can't make it so I'm gonna need to reschedule. The thing is I know the place drug tests just I don't know when. How long after like the first interview (if it goes well) is the drug test? And what's the best way to get clean, my friends recommended me this detox kit and lots of water or cranberry juice with vinegar right before the test, but I'm curious about other options.

btw, the place I'm being interviewed at is a Fry's electronics so if anyone has any experience with their tests please share.

btw, I'm a light smoker, usually like once a week. As i said, the last time was yesterday, and before that Friday, and before that sometime the week before.

I would highly suggest buying a bottle of Quick Fix. Generally for pre-employment tests they don't supervise nor listen for tampering so you can get away with it rather easily, not to mention the near 100% success rate with it if used properly. Just practice with the temperature beforehand.

I'm saying this because If they hire you on the spot they might do a test right then and there; wear a pair of shorts under your pants and keep it in the pocket of the shorts just in case.

If you really don't want to sub go with the dilution sticky advice, but it isn't as reliable as QF I wouldn't think.