Tips and Warning
When cleaning mouldy areas, do not touch the mould before spraying with hydrogen peroxide. Touching the mouldy area will release the mould spores into the air and make it more difficult to keep mould problems manageable in the future. If an area has a significant amount of mould, wear a mask to avoid breathing in the mould spores.
Do not swallow hydrogen peroxide or get it in your eyes. If this happens, get medical help or call a Poison Control Center. The U.S. Department of Housing and Urban Development (HUD) stated in its “Healthy Homes” publication that hydrogen peroxide can be used to kill mould, but that there is not sufficient research to recommend its use. HUD is unsure which moulds hydrogen peroxide is effective against or what the health hazards may be from extensive use of hydrogen peroxide.