Sick of scrubbing your shower to keep it clean from mold and mildew? Try this easy and nontoxic preventative method the next time you shower: Using the residual water and steam from your early morning shower, sprinkle table salt all over the tile, floors and even the shower curtain. The moisture from the shower will help the salt stick to all of the surfaces. Let it sit all day (and even overnight), and the next time you shower, the salt will wash down the drain. The anti-microbial attributes of salt help fight mildew and will keep your shower clean for weeks.