If you can't compost outdoors, I recommend composting indoors.
Get some red wriggler worms and call yourself a vermiculturist!
Vermicomposting is ideal for small spaces and can be done indoors—under the sink, in the garage, or in a spare room. Discard organic matter generated in your kitchen, like banana peels, by feeding it to worms. The result is a fertile mixture of decomposed food scraps and worm poop.
Check out Worm Composting Canada, which will walk you through Worm Composting 101, or contact the Ecology Action Centre. Most Canadian cities have local vermicomposting champions or organizations that sell worms and worm bins or will show you how to build one.
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A second option is bokashi composting. It's different from outdoor composting because it turns food scraps into fertilizer via fermentation. Bokashi means fermented organic matter in Japanese. A select group of microorganisms anaerobically (without air) ferment the organic waste. Apparently, they will also break down things like meat, fish, and cheese.
You could also consider canvassing your neighbours about setting up and investing in an animal-proof composter. Perhaps it could live near a community garden, or maybe your city or town could start a composting location on public property.
Avoid using a garburator or sending organics to the landfill.
Many cities, and the Canada Mortgage and Housing Corporation, also recommend that people on septic systems avoid using a garburator because it will put too much organic waste into your tank. This means you'll have to pump out your septic more often, which will increase your costs.