Its just not worth the risk, theres no point trying to mail stuff over the border when theres plenty of pot in the u.s. I would rather try to smuggle the pot myself then mail it.

If you realy insist on it I would 5x vacuum seal it and stuff it in an empty shampoo bottle (the huge demulas ones) and then fill the bottle with lavender oil. That should work for an ounce and under and if your trying to mail more then an ounce through custums your pretty dumb.