If you want the most sanitary cutting board for daily cooking, several food safety studies suggest that well maintained wooden and bamboo boards can hold up to 98% fewer live bacteria on the surface 12 hours after contamination compared with heavily scarred plastic boards. That is why some studies say wooden and bamboo cutting boards are more sanitary than plastic, especially once plastic boards develop deep knife grooves.
Why do some studies say wooden and bamboo cutting boards are more sanitary than plastic?
The short answer is that plastic behaves very differently to wood and bamboo once you start cutting on it. New plastic boards can be quite safe, but after a few months of chopping, tiny cuts trap moisture and bacteria where washing cannot easily reach. In comparison, hardwoods and quality moso bamboo are naturally less porous at the surface, draw moisture away from the top layer and do not hold deep grooves in the same way.
Several classic microbiology studies on cutting boards found three key things:
- Bacteria sink and die off more quickly in wood than on plastic at room temperature.
- Used plastic boards with knife scars held more bacteria after washing than used wood boards.
- Drying time matters: boards that were allowed to dry upright for at least 8 to 12 hours had far lower bacterial counts.
This does not mean you can ignore hygiene. It does mean that if you wash with hot soapy water, dry upright and oil occasionally, a dense wooden or moso bamboo board can be a very sanitary choice for home cooking.
How wood and moso bamboo help limit bacteria
So why do some studies say wooden and bamboo cutting boards are more sanitary than plastic in real kitchens? It comes down to how the materials behave when they get wet, scratched and then dried again.
1. Natural capillary action in wood and bamboo
Hardwoods such as acacia and fast growing moso bamboo have a tight grain. When you cut on them, any liquid on the surface is drawn slightly into the board rather than sitting on top. As the board dries, that thin layer becomes hostile to bacteria because there is not enough free water for them to multiply.
2. Knife marks that “self close”
On a wooden or bamboo board, many shallow knife marks partially close as the fibres relax. On plastic, every cut stays as a sharp little valley. After a year of daily use, a plastic board can show hundreds of these grooves, each one a place where raw meat juices can sit out of reach of a quick wash.
3. Less warping, better drying
A flat board dries more evenly. Quality boards like the Deer & Oak Large Bamboo Board DNO-BCB-LG at 45x35cm and 1.8kg are heavy enough to stay flat, which helps water run off and air circulate when you stand them upright.
Eco friendly benefits: why moso bamboo stands out
If you care about hygiene and the planet, moso bamboo is an attractive option. It is technically a grass, not a tree, and it can grow more than 30 cm per day in peak season. That means a board can be produced with less environmental impact than many plastics or slow growing hardwoods.
Deer & Oak uses certified moso bamboo on products like the Medium Bamboo Board DNO-BCB-MD and the Bamboo Double Pack DNO-BCB-2PK. Moso bamboo is dense enough to feel reassuringly solid, yet light enough to move around the kitchen without strain. It also avoids the plasticky smell some synthetic boards develop over time.
If you prefer a darker look, a carbonised finish such as the Carbonised Bamboo Board DNO-CBB-LG uses heat treatment to deepen the colour without plastic coatings. You still get the same eco friendly base material with a warmer tone that suits many British kitchens.
Product comparison: bamboo and wooden boards vs plastic
To make this practical, here is how some Deer & Oak boards compare. All wooden and bamboo boards below are double sided and supplied pre oiled for easier maintenance.
| Product | SKU | Size (cm) | Weight | Material | Typical use | Price |
|---|---|---|---|---|---|---|
| Large Bamboo Board | DNO-BCB-LG | 45 x 35 | 1.8 kg | Moso Bamboo | Daily prep, bread, vegetables, family meals | £34.99 |
| Medium Bamboo Board | DNO-BCB-MD | 38 x 28 | 1.2 kg | Moso Bamboo | Smaller kitchens, fruit, herbs, single portions | £24.99 |
| Carbonised Bamboo Board | DNO-CBB-LG | 45 x 35 | 1.9 kg | Carbonised Bamboo | Serving, charcuterie, cooked meats | £39.99 |
| Large Acacia Board | DNO-ACB-LG | 45 x 35 | 2.1 kg | Acacia Wood | Heavier duty chopping, carving joints | £44.99 |
| Medium Acacia Board | DNO-ACB-MD | 38 x 28 | 1.5 kg | Acacia Wood | Everyday prep, smaller roasts | £34.99 |
| Bamboo Double Pack | DNO-BCB-2PK | 45 x 35 + 38 x 28 | 3.0 kg total | Moso Bamboo | Separate boards for raw and cooked foods | £49.99 |
By comparison, a typical plastic board of similar size may weigh around 1.0 kg and cost £10 to £15. It can be dishwasher safe, but once it has deep grooves, studies show it can hold more bacteria even after a hot wash than a well maintained wooden or bamboo board that has been scrubbed and dried thoroughly.
Simple hygiene routine for wooden and bamboo boards
To get the sanitary benefits that studies describe, the routine matters more than the material. Here is a practical home approach that works well with moso bamboo and hardwood boards:
- Wash immediately after use with hot water and washing up liquid. Use a brush rather than a soft sponge so you reach into any shallow cuts.
- Rinse and dry with a clean tea towel to remove surface moisture.
- Stand upright on its side so both faces can air dry for at least 8 hours.
- Disinfect occasionally with white vinegar or a 1:20 mild bleach solution if you have used the board for raw meat or fish, then rinse and dry.
- Oil every 4 to 6 weeks with food safe mineral oil to reduce water absorption and help the surface resist staining.
Who this is for and who it is not for
Choosing between plastic and eco friendly wooden or moso bamboo boards is easier when you match the product to your habits.
Ideal for:
- Home cooks who want a sanitary surface and are happy to hand wash and dry a board after each use.
- People who prefer eco friendly materials and want to avoid microplastics from heavily scarred plastic boards.
- Families who like having two boards such as the Bamboo Double Pack so they can keep raw meat separate from bread and vegetables.
- Anyone who wants a board that can last 5 to 10 years or longer with simple oiling and careful cleaning.
Not recommended for:
- People who only ever use the dishwasher and never want to hand wash anything.
- Commercial kitchens that must follow strict written policies which specify colour coded plastic boards for different food types.
- Situations where boards are left soaking in water, as this can damage both wood and bamboo over time.
- Those who regularly use very heavy cleavers on bone, which are better suited to very thick butcher blocks or specialist surfaces.
FAQ
Q: Are wooden and bamboo cutting boards really safer than plastic?
A: Several studies have found that well maintained wooden and bamboo boards can show lower surviving bacterial counts after drying than heavily scarred plastic boards. The key is proper washing, thorough drying and occasional oiling so the surface does not stay damp.
Q: Can I put a moso bamboo board in the dishwasher?
A: No, you should not put moso bamboo or hardwood boards in the dishwasher because the high heat and long soak can cause warping and cracks. Hand washing with hot soapy water and drying upright is quicker than a full dishwasher cycle and keeps the board in good condition.
Q: How often should I replace a wooden or bamboo board?
A: With normal home use and basic care, a quality board can last 5 to 10 years or more. Replace it if you see deep cracks, loose fibres or any damage that you cannot sand smooth, as these areas are harder to clean properly.
Q: Is moso bamboo eco friendly compared with plastic?
A: Yes, moso bamboo is widely considered eco friendly because it is a fast growing, renewable resource harvested without replanting. Unlike plastic, it does not shed microplastics as it wears, and at the end of its life it can be recycled or composted in many areas.
Recommended boards and where to buy
If you want to put the science into practice, the simplest option is to keep two boards: one for raw protein and one for ready to eat foods. The Bamboo Double Pack DNO-BCB-2PK gives you a 45x35cm board for main prep and a 38x28cm board for fruit, bread or serving, both made from certified moso bamboo and weighing a combined 3.0kg. You can find this set on Amazon UK.
If you prefer a single large board, the Large Bamboo Board DNO-BCB-LG at 45x35cm and 1.8kg or the darker Carbonised Bamboo Board DNO-CBB-LG at 1.9kg are both practical choices for everyday cooking. They are available along with our acacia range on the Deer & Oak chopping board collection and in our current bestsellers.
So why do some studies say wooden and bamboo cutting boards are more sanitary than plastic? Because when you choose a dense, eco friendly material like moso bamboo, wash it properly and let it dry, you are giving bacteria far fewer places to hide than on a tired plastic board covered in scars.