Borax decahydrate powder (sodium tetraborate decahydrate) is a versatile, multi-purpose compound widely used as a household cleaner and laundry booster, a component in industrial manufacturing (especially glass and ceramics), a flux in metallurgy, and a source of boron in agriculture.
Pest control: Boric acid powder can kill many types of insects, including ants, cockroaches, fleas, silverfish, and termites. It can be used as a pesticide for rats and flies. To use boric acid for cockroaches, you can apply it to crevices in cabinets, behind appliances, and in openings where plumbing enters walls.
Antiseptic: Boric acid can be used as an antiseptic to treat minor cuts and burns.
Eye care: Boric acid can be used in eye drops and artificial tears to provide moisture retention and pH control. It can also soothe eye irritation and remove pollutants like smog, chlorine, and other chemicals.
Athlete's foot: Boric acid powder can be used to treat or prevent athlete's foot. You can mix two teaspoons of boric acid with one cup of rubbing alcohol or water and apply it to your feet with cotton swabs. You can also put the dry powder in the ends of your socks or stockings.
Vaginal infections: Boric acid can be used to treat vaginal infections.
Foot odor: Boric acid powder can be applied inside stockings to remove foot odor.
Water pH: Boric acid can be used to stabilize the pH level of water and prevent algae problems.
Stain removal: Boric acid powder can be used to remove tough stains from clothes.
Timber preservation: Boric acid can be used to preserve timbers.
Welding flux: Blacksmiths use boric acid as a welding flux.
Boric acid is a caustic chemical and can be dangerous if swallowed.