Bon... Je suis pas en forme ce soir. Donc, s´il te plaît, hein... C´est marqué, ok ?
"You grind up a chlorine tablet put it in the bottle. Then, add some alcohol to it, but it has to be a high percentage, like 70%+ ethanol. Lab grade ethanol, vodka or rubbing alcohol would do it. Note: when you put the ethanol in, run like hell and try not to die from the flying shards of plastic."