My heart is set on fumigation.
I had a chat with a highschool friend employed as a phamicutical biologist on using 2-Phenylphenol safely. Let's just say I would have signed my death warrant if I had proceeded as I intended. It doesn't take much to kill a man, they use a 1% solution to deactivate viruses for use in vacinnes. As a result, the 99% pure stuff can kill you if you open it up wrong. He was surprised that I even was able to get pricing information.
Kids and the internet.
So, on with sulphur. Outlined my setup and ready to go. I'm going to do a 50 gram with accellerant in tuna tin burn and if that doesn't work have a beeswax /cotton/ sulphur candle in a shoe wax tin as backup. Tins at half height in the box with shoes balanced on a plastic cartoon - insulation between cartoon and burning tin. Cardboard box with a plastic trash bag over the outside using the box for structure. 3 hour dwell time. Hopefully 50 grams is enough.
As for water stains, suede shampoo. Best of luck, should have applied a repellant. Be sure to dry them with newspapers or prepare to revisit this thread to follow my adventures.