5-7 day detox kits questions

[nova2wl]

hello there...i just learned that i will be having a drug test on Monday for a job with my county. they were supposed to call me last month so i stopped for an entire month to be sure but lo and behold they didn't call so i thought i wasn't going to get the job.

anyways i have a question about those 3,5,7 day detox kits that are avaliable at GNC. Do these things really work and if so do they clear out the THC completely or is just a masking thing? also will it show up on my test as a dilution method? the test is for a job so i don't think it will be a lab test. however, it is kinda for the government so i don't know.

Im just doing this as insurance as I am most likely just going to use my friends pee.

thanks for any help.