Chocolate Death, Oh, I really didn't thought of that, nor did I understood but I've googled it and came across that salt kills them...I'm glad I'm not a Gastrodon! XD I guess I was right about something in youre name and joke - death!
Well, look at the bright side, shiny Slurpuff looks far better than a regular one and even if you don't use it anymore, it's still serves as a memento!