its best to be safe mate and dont take the risk getting caught with something strapped to your leg, some places will stand and watch you pee in a pot, im not joking either, been their and done it mate, if you drink plenty of anything you should be ok, but drinking lots and lots of water is the best option for cleaning it all out, just depends how long you got to go before the test, ill try and get caught up with this journal, but it can be done with just water as long as its drank in vast amounts and time given before the test, the more diluted the urine the less likely you are to get caught, but you need a while to clear it out the system to be totally safe, if you really want the job then id do it properly mate as long as you got the time,