Safe Storage of Cleaning Products
Cleaning products are among the most hazardous household chemicals in Ontario homes — yet they're routinely stored in the under-sink cabinet alongside food and children's reach. Proper storage and handling significantly reduces accident and exposure risks.
What Never to Mix
Some combinations of cleaning products produce toxic gases:
- Bleach + ammonia: Produces chloramine gas — toxic fumes that cause respiratory damage. Many glass cleaners contain ammonia; never combine with bleach-based products
- Bleach + vinegar (or any acid): Produces chlorine gas — highly toxic
- Bleach + rubbing alcohol: Produces chloroform and other toxic compounds
- Hydrogen peroxide + vinegar: Creates peracetic acid — corrosive
Never mix cleaning products in the same spray bottle or bucket, even if both seem mild.
Storage Best Practices
- Store in original, labelled containers — never decant into unlabelled bottles
- Keep in a locked cabinet if children are in the household — childproof latches are not sufficient for determined toddlers; a keyed or combination lock is more reliable
- Store upright to prevent leaks
- Keep out of direct sunlight (heat degrades many products and can cause pressure buildup in aerosols)
- Do not store near heat sources, pilot lights, or furnaces
Disposing of Old Products in Ontario
Ontario municipalities (GTA and major cities) accept household hazardous waste including cleaning products at designated depots. The City of Toronto, Peel Region, York Region, Durham Region, and Halton all operate drop-off programs. Do not pour chemical cleaners down the drain or into the garbage. Find your local depot at your municipality's waste management webpage.