When boiling up traps, whatever you use, bring to boil for about ten minutes and let set over nite to cool. In morning or whenever take out and hang to dry. If your doing water traps dont have to rinse off black residue on traps but if going to wax for canines i would rinse off the residue when traps are still wet. Then dry and wax.... for water traps doesnt make a differance. just take out of pot , hang to dry and then wax if waxing. Canine traps dont need to be dyed. Clean them then do what ever you prefer : dye, wax , dip ect and use... Dying traps after they are used a season or two does help a bit keep them from rusting up . To each his own and what he likes to do or method preferred.