Barracuda Brackets’ Watertight Toilet Flange and Toilet Flange Tile Guide are products that can prevent mold growth in the subfloor under the toilet. The Watertight Toilet Flange has a sealed bottom and directs all water down the drain. The Toilet Flange Tile Guide is a polygon-shaped tool that is adhered to the floor around the flange that seals the area from moisture and makes tiling easier. When installed together, the entire area under the toilet and subfloor is protected.