Originally Posted by McFlyRides

On a bike where I use teflon lubes and clean the chain with simple green and water, I finish with an aerosol chain cleaner to drive out the water quickly.

My plan for re-wax of a super messy chain would be similar—if I need to use boiling water to clear out the old gunk, the chain will be off the bike anyway and I can follow with denatured alcohol.