How to Dispose of Coffee Grounds From French Press

If you are a coffee-lover, you know that using a French press provides the best way of making the perfect cup of coffee. However, what do you do with all those coffee grounds once you’ve finished brewing? In this article, I will look at how to dispose of coffee grounds from the french press.

How to Dispose of Coffee Grounds From French Press

The three common ways to dispose of coffee grounds from the French press are: throwing them in a trash can, using a knock box, or adding the used coffee grounds to a compost heap.

An image of a French press

French press is the more manual of coffee makers, which means you have full control over your brew. The strong flavors and essential oils are preserved in this process because they’re not filter-dissolved like regular espresso machines; instead, everything gets trapped inside it when brewed properly.

Putting in a Trashcan

Putting coffee grounds directly in the trashcan is probably the easiest way to get rid of coffee grounds. Just make sure they’re bagged up tightly, so they don’t create any messes. Coffee grounds help remove foul odor from the trashcan, so it’s a win-win.

Using a Knock Box

A knock box is a small container in which you can put your used coffee grounds. There are two types of knock boxes: countertop and one that mounts under the counter. If you choose the countertop knock box, make sure that it has a non-slip base so that it doesn’t slide around while you’re using it.

If you opt for the under-counter knock box, ensure it’s easy to install and that it will fit in the space under your counter. You’ll also want to get one that has a removable bottom so that you can easily empty it when it’s complete.

Once you have your knock box, all you have to do is put your used coffee grounds in it after each use. When it’s time to empty it, take the bottom off and dump the grounds into the garbage can.

What Is the Purpose of a Knock Box?

A knock box is used to store used coffee grinds or used espresso grounds. After utilizing it, you use it to empty your filter or coffee grinds from a French press. Anyone may require a knock box for one of these reasons:


A knock box will allow you to dispose of all those grounds in one place and then throw them away at the end of each day.


Unlike a trash can where you have to make sure they’re bagged up tightly, so they don’t create any messes. A knock box prevents you from creating a mess while disposing of your grounds.

A close-up photo of a French press

This unique design lets you pour out all liquid without worrying about drips or spills. You won’t have any more messy clean-up efforts because everything stays inside the container.

Additionally, the design of these boxes means they’re easy to fill and clean; just put them upright on their base like any other container while you pour out all contents before cleaning up afterward (no need for messy scrubbing).

Prevents Odor

Used and stale coffee grounds have an unpleasant smell. The Knock Box is an innovative design that prevents the odor of old coffee grounds from spreading throughout your home or office. It features a filter that traps the unpleasant odor of stale coffee grounds.

What to Look For When Purchasing a Knock Box

Whether you are making coffee for one or many people, a knock box is an easy way to dispose of coffee grounds from the french press. The best thing about them is that they can be used repeatedly without getting dirty. Here are some things to consider when shopping around for a knock box.

  • Size – The size of the knock box should be relative to how many people will be using it. If you have a small shop, you won’t need something too big. Conversely, if you have many customers, you’ll want something that can accommodate all coffee grounds.
  • Material – The material you choose for your knock box is essential because it will sustain the force from time to bang against. A metal one offers more durability than plastic or rubber.

Adding to a Compost Heap

If you have a compost heap, add your grounds to it as they are rich in nitrogen. This will help the decomposing bacteria get energy from this food source and give off more heat than if no coffee beans were present.

Digging up the ground and then placing your grounds over it is an excellent way of encouraging microbes. This will help give the soil more nutrients and ensure it isn’t dried out too quickly before you do anything else with your garden, like planting.

Placing those pesky grounds on top is key- they’ll prevent any excess water from evaporating away, which would be bad for plants’ roots (and if there are no rainstorms).

An image of a barista putting coffee grounds on a French press

Importance of Disposing of Coffee Grounds

Improper disposal of coffee grounds may lead to pollution and contamination of water supplies. It is important to be aware of the proper disposal of coffee grounds to protect the environment.

Coffee grounds also attract bugs and other pests such as cockroaches and mice. If you have an infestation of pests leaving coffee grounds out can worsen the problem.

Another reason to get rid of coffee grounds is that they can start to smell. If you leave them out for too long, they can stink up the room, especially if they get wet.

What Not to Do With Coffee Grounds

  • Don’t pour them down a sink or flush them down the toilet. This will cause clogs in your plumbing and is costly to fix, it is best to know what dissolves coffee grounds.
  • Don’t throw them in the garbage disposal. The blades will just chop them up into smaller pieces, and they’ll cause clogs that way too.


How to dispose of coffee grounds from the french press can be done by putting the grounds in a trash can, using a knock box or adding them to a compost heap. Remember to tightly bag up your garbage bag when disposing of coffee grounds in a trash can to prevent odor from escaping.