Cleaning Tips3 min read

How to Disinfect Cutting Boards Properly — Toronto Guide 2026

How to properly disinfect wood and plastic cutting boards in your Toronto home to prevent cross-contamination. The hydrogen peroxide and salt scrub methods.

M
Maidless

How to Disinfect Cutting Boards Properly

Cutting boards harbour bacteria in surface scratches and cuts — both wood and plastic boards develop grooves over time that trap food particles and bacteria. Standard dishwasher washing kills surface bacteria but doesn't reach embedded particles in deep grooves. For boards used to cut raw meat, disinfection after every use is recommended.

Plastic Boards: Bleach Solution

  1. Wash the board with hot water and dish soap to remove food particles
  2. Mix 1 tablespoon of bleach per litre of cold water (hot water makes bleach less effective)
  3. Apply the bleach solution to the entire cutting surface and allow 2 minutes of contact time — this is the disinfection step
  4. Rinse thoroughly with clean water and air dry
  5. Note: Bleach is not recommended for wood boards as it dries out the wood and causes cracking over time

Wood Boards: Salt Scrub + Vinegar

  1. Wash the board with hot soapy water first
  2. Sprinkle coarse salt over the cutting surface
  3. Use half a lemon to scrub the salt into the board — the salt acts as an abrasive to physically lift embedded particles, and the lemon's citric acid has mild antimicrobial properties
  4. Rinse, then apply white vinegar to the board with a cloth and allow 5 minutes
  5. Rinse and dry standing upright — laying flat restricts airflow and promotes warping

Hydrogen Peroxide (Effective for Both)

  • After washing, spray 3% hydrogen peroxide onto the board
  • Allow 5 minutes of contact time — hydrogen peroxide is effective against E. coli and Salmonella at this concentration
  • No rinsing required — it breaks down to water and oxygen
  • This is a good option for wood boards where bleach should be avoided

When to Replace

Replace plastic boards when deep grooves develop that cannot be fully cleaned — bacteria in grooves deeper than 1–2mm cannot be reliably removed. Sand wood boards with fine sandpaper to remove grooves and re-oil with food-grade mineral oil to restore the surface.

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