Blue three-part cannabis grinder soaking in water with bubbles on top

How to Clean a Cannabis Grinder

Water pipes are really not that hard to clean, and some people even think they’re easier to clean than a regular marijuana pipe. To help you clean your water pipe, also known as a “bong,” and ensure you don’t put off cleaning it, we’ve put together this guide that explains:

Why Do You Need to Clean Your Cannabis Grinder?

Most cannabis consumers know that cleaning your grinder should be routine when you smoke—but aside from just cleanliness, some don’t know why you should keep your grinder clean.

Here are our top three reasons to clean your marijuana grinder:

  1. A clean grinder is key to preserving the flavors of your marijuana flower because you aren’t risking some of those old pieces of residue ending up in your pipe’s bowl or “joint.”  
  2. Cleaning ensures that your grinder is performing at its best. If the teeth of your grinder are gunked up with old product, they won’t cut your fresh marijuana down well. 
  3. Old plant material can grow things like mold and bacteria—two things you don’t want to be inhaling when you consume marijuana. A clean grinder is a safe grinder. 

What Do You Need to Clean Your Cannabis Grinder?

While you can find the cannabis you need on our product menus, the tools you need to clean your grinder are likely found around your house. 

  • Isopropyl alcohol (90% concentration or higher)
  • A plastic bag or container
  • Toothbrush or pipe cleaner
  • Hand towel

Once you have these items, you’re ready to start cleaning your grinder.

Your Step-by-Step Guide to Cleaning a Marijuana Grinder

Cleaning a marijuana grinder is easy once you’ve gathered the right tools. Just follow these steps.

Step 1: Disassemble Your Grinder

Depending on what type of grinder you have, disassembling it can be as easy as popping the lid off or as complicated as detaching storage chambers and kief catchers (which really isn’t complicated at all). No matter how many pieces your grinder has, you want to pull them apart so that you can clean each one individually.


Step 2: Remove Leftover Flower

Step 2: Remove Leftover Flower

Once you have it disassembled, clear out the bits of plant matter that are loose inside the grinder. Of course, if you have kief in your grinder, you can also put it in a small container and store it in an area of your home away from heat and light until you’re ready to use it. Once you’ve gotten all the pieces of your grinder separated, it’s time to move to the next step.

Step 3: Soak in Isopropyl Alcohol

Step 3: Soak in Isopropyl Alcohol

If you clean your grinder regularly with soap and water, you may be able to skip this step. If you go a little longer than you should between cleanings, or you need to do your monthly deep clean, we recommend soaking your grinder in isopropyl alcohol. This will soften the resin and other stuck-on pieces of debris, so it can be easily removed. To soak your grinder, fill your container with enough isopropyl alcohol to submerge your grinder. Then, set your grinder in it and wait 20-30 minutes.

Step 4: Rinse & Scrub

Once you’ve given your grinder a good soak, it’s time for a scrub. You can do this with a paper towel, a wash cloth, pipe cleaner, or our personal favorite, a cheap toothbrush. First, using dish soap and warm water, wash your grinder. If you still have some stubborn spots of cannabis debris after you wash and rinse your grinder, grab your toothbrush and get in all the nooks and crannies. 

Step 5: Dry

Step 5: Dry

Once you’ve got it sparkling clean, give your grinder a wipe down with a clean towel. Then, let it air dry to ensure all moisture has evaporated before using it again.

Answering FAQs About Cleaning a Grinder

There are a lot of different ways to clean a grinder that cannabis enthusiasts swear by, so it’s no surprise we get a lot of questions about the process—like these:

Should I put my grinder in the freezer before cleaning?

No, it’s not really worth the time. When you put your grinder in the freezer, it makes the build up more brittle. Some cannabis enthusiasts then insist that this makes it easier to knock off the inside of your grinder. The problem is that your natural body heat from the hand holding your grinder is going to warm it up fast, negating the time you spent waiting for it to freeze in the first place.

Soaking it in isopropyl alcohol is really a much more efficient way of cleaning.

Can I boil my marijuana grinder to clean it?

Yes. Many cannabis enthusiasts use this method once a week to ensure their grinder stays relatively clean. Just remember these two things: 1.You're still going to want to give it a deep clean at least once a month with the methods listed above, and 2. Be sure your grinder can be boiled. You don’t want to boil wood or plastic grinders.

How often should I wash my grinder?

If you’re not a regular consumer of marijuana, you may not need to clean it very often. If you consume throughout the week, you may want to deep clean your grinder twice a month or even once a week.

Cleaning Your Cannabis Grinder

Knowing how to clean a marijuana grinder is an important part of ensuring you have the best experience during your smoke sessions. If you’re interested in picking up a grinder for your next session, head to your local dispensary. Our cannabis experts can help you find the right grinder, and they can even show you how to disassemble it for easy cleaning.

Recreational cannabis is not available in all states. Cannabis is for medical use only and may only be used by certified patients in Ohio and Pennsylvania. State laws impact what dispensaries can and can’t sell to recreational customers and certified patients. Not every type of product, consumption method, dosage form, or potency mentioned on this blog will be permitted in all locations.