Go to the Source for the info at the City of Ottawa website. Here's a sample of what you will find...
Liquid or hazardous waste from industrial, commercial and institutional sources is not accepted. The one-day Household Hazardous Waste Depots are for residential household waste only.
Aerosol containers
Propane cylinders
Disinfectants
Fluorescent bulbs/tubes
Fire extinguishers
Fertilizers and pesticides
Mercury switches/thermometers
Needles and syringes
Pharmaceuticals
Paints and coatings
Oven and window cleaners
Pool chemicals
Gasoline
