Borax is a soft and light, colourless crystalline substance, borax is used in many ways—as a component of glass and pottery glazes in the ceramics industry, as a solvent for metal-oxide slags in metallurgy, as a flux in welding and soldering, and as a fertilizer additive, a soap supplement, a disinfectant, a mouthwash, and a water softener. Uses • Make an all-purpose cleaning spray. • Clean your tile floors. • Freshen the garbage disposal. • Get rid of bug infestations. • Clean the dishwasher. • Make a stain-removing cleaning paste. • Prevent mildew buildup. • Kill weeds.