About 1 billion toothbrushes are thrown away in the U.S. every year, according to estimates based on the American Dental Association's replacement advice, and most of them are plastic. If you replace yours every three months, that's four brushes a year. For a family of four, that's 16 plastic brushes a year, or 160 over a decade, and none of them break down in a landfill.
One brush feels tiny. It's the repetition that adds up.
The simple math
Brushes per year = people in your home × 4.
Use an electric toothbrush? Same math for replacement heads, which are also mostly plastic. Add a plastic floss container every couple of months and the pile grows.
Our free plastic calculator does this for your household. Pick manual or electric, enter how many people brush, and it shows the plastic you could avoid each year and over 10 years.
How much plastic is in a toothbrush?
A typical manual toothbrush weighs somewhere around 15 to 20 grams, and almost all of that is plastic and rubber. That sounds small, but it adds up over a lifetime of brushing. Our calculator uses this kind of estimate to show your yearly total. Electric replacement heads are smaller, but they're also almost entirely plastic and get replaced just as often.
Why toothbrushes are hard to recycle
A plastic toothbrush is usually several materials in one. It has a hard plastic handle, rubber grips and nylon bristles fixed with tiny metal staples. That mix is why most curbside programs won't take them. So most plastic toothbrushes end up in landfills or incinerators, and some end up in the environment.
Where the plastic goes
Plastic doesn't really disappear. It breaks into smaller pieces called microplastics, which now turn up in water, soil and food. We cover that in microplastics: the smallest big problem.
How to cut it down
Switch the handle. A bamboo toothbrush 4-pack ($14.99) covers one person for a year. The handle is compostable once you pull the bristles.
Switch your electric heads. We make bamboo heads for Sonicare, Oral-B and more, so you can keep the handle you already own.
Refill your floss. A stainless steel floss container with silk floss refills ends the plastic floss case.
Use up what you have first. Throwing away a drawer of new plastic brushes doesn't help anyone. Finish them, then switch.
An honest note on bristles
Our bristles are nylon or a castor-bean-based nylon, and they aren't compostable yet. A bamboo brush isn't zero plastic, but it cuts the plastic in each brush down to the bristles, which is most of the way there.
Want to see your household's number? Try the plastic calculator.
Quick answers
Can I recycle a plastic toothbrush curbside?
Usually not, because it mixes plastics, rubber and metal. Some brands run mail-back programs.
Are bamboo toothbrushes really better for the planet?
The handle is compostable and made from a fast-growing grass, so the plastic left in each brush is just the bristles.
Do electric toothbrush heads create more plastic?
Most replacement heads are almost entirely plastic. Bamboo heads replace the plastic body.
How long does a plastic toothbrush last in a landfill?
Plastic breaks down very slowly, often estimated at hundreds of years.
What's the easiest first swap?
Your next replacement brush. When your current one is due, replace it with bamboo.
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