If your green bin has gone from "a little funky" to "you can smell it from the driveway" in the last few weeks, you're not imagining it — and it's not just you. Every green bin in Burlington and Milton gets worse this time of year. Here's what's actually happening inside that bin, and what you can do about it between proper cleanings.
Why summer heat makes it so much worse
Your green bin isn't just holding food scraps and yard waste — it's running a small, uncontrolled compost operation every time the temperature climbs. A few things stack up against you once it's consistently warm out:
- Bacteria grow faster. Above roughly 25°C, the bacteria responsible for breaking down (and smelling up) organic waste multiply dramatically faster than they do in spring or fall.
- Liquid pools at the bottom. Melting ice packs, watery food scraps, and grass clippings release liquid that collects in the base of the bin — and that liquid is where most of the smell actually lives.
- The bin itself becomes a greenhouse. A closed plastic bin sitting in direct sun can get significantly hotter inside than the air around it, which speeds everything above up even further.
- Plastic absorbs odour over time. Every hot week without a real clean lets more smell soak into the plastic itself, which is why a quick rinse stops being enough as summer goes on.
What actually helps between cleanings
None of these replace a proper deep clean, but they'll buy you real breathing room (literally) between them:
- Line the bin. Compostable bags catch most of the liquid before it ever touches the bin itself — this alone makes a bigger difference than almost anything else on this list.
- Freeze the worst offenders. Meat scraps, dairy, and anything especially pungent can sit in a bag in the freezer until collection day instead of stewing in the bin for a week.
- Sprinkle baking soda after emptying. A light dusting in the bottom of an empty bin helps absorb odour until the next pickup.
- Rinse with a hose weekly. Even a quick rinse-and-dump after collection day removes a layer of residue before it has a chance to bake in.
- Keep the lid fully dry before closing it. Trapped moisture under a closed lid is exactly the environment bacteria like best.
- Move it out of direct sun if you can. Even a few feet of shade meaningfully slows down how hot the inside of the bin gets.
When a garden hose isn't cutting it anymore
Here's the honest truth: once grime has really baked onto the walls of a bin, a hose and a bottle of dish soap won't fully get it out. That residue is what keeps attracting flies and keeps the smell coming back within a day or two, no matter how much baking soda you use.