get a pill botlte and seal the lid shut with candal wax works for me scentless and waterproof. then rap it up in a little baggie with coffee grounds and seal it shut and wrap it up in a grocery bag. send it priority mail costs a little more but i would recomend it because it gives them less time to hold on to ur package. and put a fake return adress on the box and an ebay# on it. i will try and post a pic to better illustrate the pill bottle method.