 *Photo: Unsplash*
Montrealers who live in newer condos or post-2000 homes know the garburator — that humming machine under the kitchen sink that grinds food scraps into the drain. The word "garburator" is distinctly Canadian; the rest of the English-speaking world calls it a garbage disposal. In Montreal, InSinkErator is the dominant brand, found in kitchens from Griffintown glass towers to Brossard bungalows, Laval split-levels, and Côte-des-Neiges townhouses built after 2000.
But garburators get dirty fast. Without regular cleaning, the grinding chamber develops a biofilm of food residue that produces the distinctive sour, rotten smell that drifts up from the drain. Montreal's hard water (90–150 mg/L CaCO₃) deposits mineral scale on the grinding plate and splash guard over time. And from June through September, garburators that aren't cleaned become the primary fruit fly breeding site in Montreal kitchens, as the warm, humid environment combined with fermenting food residue provides ideal egg-laying conditions.
This guide covers every cleaning method — the weekly maintenance routine, the monthly deep clean, and what to do when the smell won't go away — with specific product recommendations available in Montreal.
How Often Should You Clean a Garburator?
After every use: - Run cold water for 20–30 seconds after turning the garburator off to flush ground food through the drain pipe
Weekly: - Ice cube flush with coarse salt to clean the grinding plate - Deodorize with citrus peels (lemon, orange, lime)
Monthly: - Full baking soda and vinegar deep clean - Splash guard (rubber baffle) scrub - Inspect for scale buildup
Immediately if: - You notice a rotten or sour smell when running water at the sink - Fruit flies are appearing in the kitchen - The unit drains more slowly than usual
The Weekly Maintenance Routine
Cold Water Flush
Always run cold water when operating the garburator — hot water melts fat, which then re-solidifies in the drain pipe as a grease coating. Use cold water for 20–30 seconds after the grinding stops to flush particles fully through the trap.
Ice Cube and Coarse Salt Method
Fill the garburator chamber with ice cubes. Add 2 tablespoons of coarse salt (*gros sel* — available at IGA, Metro, Maxi, or Provigo for under $3). Turn the garburator on without running water, let it grind the ice for 15–20 seconds, then run cold water for 30 seconds.
The ice hardens any grease or food residue on the grinding plate and impellers, and the abrasive action of the ice-salt combination scrubs the chamber surfaces. The cold water flushes the debris down the drain.
Citrus Deodorizing
After the ice treatment, cut a lemon, lime, or orange into quarters and feed the pieces into the running garburator one at a time with cold water running. The citrus oils clean and deodorize the grinding chamber. Citrus peels from squeezed lemons work just as well. In winter, when citrus is cheap and plentiful in Montreal supermarkets, this is the most cost-effective weekly deodorizer.
The Monthly Deep Clean
Baking Soda and Vinegar Method (Most Effective)
What you need: - ½ cup (125 ml) baking soda (bicarbonate de soude — IGA, Metro, Maxi, Dollarama; $1–3 per box) - 1 cup (250 ml) white vinegar (vinaigre blanc — widely available; $2–4 per litre) - A kettle of boiling water
Steps: 1. Turn off the garburator 2. Pour ½ cup of baking soda directly into the drain opening 3. Follow immediately with 1 cup of white vinegar 4. Place the drain plug over the opening to force the fizzing action downward into the chamber 5. Wait 10–15 minutes 6. Remove the plug and pour boiling water down the drain to flush everything through
The fizzing reaction between sodium bicarbonate and acetic acid releases carbon dioxide, which agitates and dislodges the food biofilm. The boiling water flush emulsifies remaining grease.
Montreal hard water note: If you see white or grey scale on the splash guard or visible components, add 2 tablespoons of citric acid powder to the boiling water flush to dissolve mineral deposits. Citric acid is available at Jean-Coutu, Pharmaprix, and Bulk Barn for $4–8 per bag.
Dish Soap Flush
A quicker method: with the garburator off, squirt dish soap (Dawn or Palmolive) into the drain. Fill the sink basin halfway with warm water. Turn on the garburator and let the soapy water flush through the chamber. Less thorough than baking soda and vinegar but useful between monthly deep cleans.
Commercial Cleaning Tablets
Affresh Disposal Cleaner and similar tablets are available at Canadian Tire, Home Depot, and Rona Montreal locations for $6–12 per pack. Drop one in, run water, and operate the garburator per the instructions. Convenient for quick refreshes.
Cleaning the Splash Guard (Rubber Baffle)
The rubber splash guard — the black rubber ring with flaps in the drain opening — is the dirtiest part of most garburators and the primary odour source when neglected.
How to clean it: 1. Turn off the garburator at the wall switch (flip the circuit breaker under the sink for safety) 2. Lift the splash guard straight out of the drain opening (it sits in a groove) 3. Scrub the underside thoroughly with an old toothbrush and dish soap — the underside is where the worst buildup accumulates and is invisible from above 4. Rinse thoroughly under warm water 5. Replace in the drain opening
Safety note: Never put your hand inside the garburator chamber. The splash guard can be cleaned from above without reaching into the grinding area.
What NOT to Put in a Montreal Garburator
Never put in: - Grease and cooking oil — solidifies in the drain pipe; dispose in a sealed container in the garbage - Potato and starchy vegetable peels — creates a paste that coats the grinding plate; especially relevant given Quebec's potato-heavy cuisine - Fibrous vegetables — celery, rhubarb (popular in Quebec gardens), artichoke leaves, corn husks; fibres wrap around the impellers - Pasta and rice — expand with water and form a starchy clog in the drain trap - Coffee grounds — accumulate in the drain trap over time - Hard pits and bones — avocado pits, large poultry bones; damage the grinding plate - Cheese curds — a Quebec-specific caution: poutine cheese curds and fresh cheeses accumulate and go rancid; dispose in the green bin (bac vert) - Grease from smoked meat and charcuterie — common in Montreal kitchens; should never go down any drain
InSinkErator Models in Montreal
InSinkErator is the dominant brand at Montreal retailers. Common models:
- Badger 5 (1/2 HP): $149–189 at Home Depot and Rona; entry-level for 1–2 person households
- Badger 700 (3/4 HP): $219–269; suitable for families; handles most food waste
- Evolution Compact (3/4 HP, SoundSeal): $319–389; popular in Griffintown and downtown condos where noise matters
- Evolution 200 (3/4 HP, auto-reverse): $369–449; handles difficult foods more reliably
Available at: Home Depot (Brossard, Anjou, Laval, Décarie), Rona / RONA L'entrepôt, Canadian Tire (city-wide), and BMR (Longueuil, Laval).
Condo installation note: In Montreal, garburators must be permitted under your building's bylaws (règlement de l'immeuble). Check with your syndic de copropriété before installing. Most buildings completed after 2005 are designed to accommodate them.
FAQ
Q: How do I clean a garburator with baking soda and vinegar?
A: Pour ½ cup of baking soda directly into the drain opening, then immediately add 1 cup of white vinegar. The mixture fizzes vigorously — this is normal and is what cleans the grinding chamber walls. Cover the opening with the drain plug to direct the fizzing downward. Wait 10–15 minutes, then flush with a kettle of boiling water. Repeat monthly. For Montreal hard water scale, add 2 tablespoons of citric acid to the boiling water flush. Both baking soda and white vinegar are available at every Montreal grocery store for $1–4 each.
Q: Why does my garburator smell even after cleaning?
A: The most common source of persistent odour is the underside of the rubber splash guard, which accumulates a thick layer of food biofilm invisible from above. Remove the splash guard by lifting it straight out of the drain opening and scrub the underside with a toothbrush and dish soap. If the smell persists, the biofilm may be established on the grinding plate itself — try the baking soda and vinegar treatment followed by a boiling water and citric acid flush. If still smelling, a plumber can mechanically clean the internal components.
Q: Is it safe to put lemon peels in a garburator?
A: Yes — citrus peels are one of the best natural deodorizers for garburators. The citric acid in lemon, lime, and orange peels cuts through grease and the citrus oils leave the grinding chamber smelling fresh. Cut citrus into small pieces before feeding into the running garburator. Avoid putting whole citrus or very thick rind sections in at once — smaller pieces process more cleanly.
Q: How do I stop fruit flies from breeding in my garburator?
A: Montreal kitchens get significant fruit fly pressure from June through September. The garburator is one of the primary fruit fly breeding sites along with the kitchen drain and the recycling bin. To eliminate the source: (1) clean the unit with baking soda and vinegar; (2) scrub the splash guard underside; (3) pour 1 cup of salted boiling water down the drain after each use to kill larvae; (4) store fruit in the refrigerator during summer; (5) cover the drain opening overnight. If fruit flies persist, check the drain trap for accumulated food debris beyond the garburator.
Q: Can I use bleach to clean my garburator?
A: Only as a one-time treatment for mold (for example, after a vacation where the unit sat unused). Use 1 tablespoon of bleach in 1 litre of cold water, pour slowly into the garburator, wait 5 minutes, then flush with cold water. Do not use bleach regularly — it corrodes the rubber splash guard and seals, shortening their lifespan. For routine cleaning, baking soda, vinegar, dish soap, and citrus are safer and equally effective.
Q: My garburator is jammed — what should I do?
A: First, press the reset button on the bottom of the unit firmly until it clicks back into place, then try the switch again. If the unit hums but doesn't spin, the grinding plate is mechanically jammed: find the hex wrench socket at the bottom centre (InSinkErator units come with a small hex key; a 1/4-inch hex key also works on most models). Insert it and manually rotate the grinding plate back and forth to release the jam. Remove whatever was blocking it from above using tongs — never your hand. Run cold water and try the unit again. If it still doesn't work after reset and manual unjamming, the motor may be burned out — call a plumber. Montreal plumber rates for a service call run $120–200 plus $80–150/hour.
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*For a complete kitchen cleaning routine, see our guides to [how to deep clean a kitchen](/en/blog/how-to-deep-clean-a-kitchen-montreal), [how to clean a dishwasher](/en/blog/how-to-clean-a-dishwasher-montreal), and [how to clean kitchen drains](/en/blog/how-to-clean-a-kitchen-drain-montreal). If your kitchen needs professional attention, Sparkling Stays offers [home cleaning](/en/services/home-cleaning/montreal) and [deep cleaning services](/en/services/deep-cleaning/montreal) throughout the Montreal area.*
