I keep the bathtup filled to about 4 or 5 inches with a clorox/water mixture. It cuts down on all airborne bacteria/virus/fungus. Especially if you share a ventilation system in communal housing. PK. Clean and Sanitize With Clorox Bleach 101
DIY Bleach Doodles T-Shirt Using the Clorox Bleach Pen. There have been other tutorials using the Clorox Bleach Pen, but none that offered such good advice, or did such a great job of drawing on a T-Shirt.