ORDERING DRUGS FROM NEW ZEALAND

I saw a bunch of sites that have all these pills, with BZP which is supposed to produce speedy effects. They are all new zealand sites, but will ship to the U.S. Howvere alot of the substances in their pills are illegal here, but on the bottle they send it doesn't like say CONTAINS BENZYL-PIPERZINE. I was wondering what the chances are this could slip through customs or is it safe...Hmmm. Decently prices for the dosage per pill too, I think for the heavy ones, the ones that your not supposed to take more than 2 in a week. They are like $10 for 2