Magnesium Sulphate (epsom salt)

Clean bathroom tiles: Mix equal parts Epsom salt and liquid dish detergent and use as a scrub on bathroom tile.
Prevent slugs: Sprinkle Epsom salt on or near interior entry points to prevent slugs.
As a hand wash: Mix Epsom salt with baby oil and keep by the sink for an effective hand wash.
Clean detergent build-up on washing machines: Fill the machine tub with hot water, add Epsom salt, and run an agitate/soak/agitate cycle to dissolve detergent build-up (please consult your machine’s instruction manual for specific instructions).