Hydrogen peroxide is a true staple in every first aid kit. It can be used as an antiseptic to treat cuts and wounds to prevent infections. You can even use it as a disinfectant around your home. This inexpensive option is especially helpful if someone in your household is sick and you have a lot of surfaces to clean and disinfect. To clean hard surfaces, simply spray hydrogen peroxide directly on the surface, wait five minutes, and wipe away the dirt and germs.