Just boiling water would work fine in the sink. It doesn't hold onto anything. Whatever Alucard had is long gone, Kami. You can stop cleaning everything up now. Honest. I never bleached my sink after Titan died, it wasn't necessary. I did his laundry with Clorox disinfectant bleach & the rest of my crews laundry, too, wiped down the kitchen with Lysol wipes and that was all I had to do. Besides cleaning out his tank. The fungus doesn't live on anything for more than 24-48 hours, then it's long gone.