I still remember the first time I stuffed a KONG with peanut butter and handed it to my dog, Biscuit. He went absolutely nuts for it. That thing kept him busy for a solid 45 minutes while I finally got some work done. But then came the part nobody talks about: cleaning it. I stared at that sticky, peanut butter coated rubber toy and thought, are Kongs dishwasher safe, or am I about to make a very expensive mistake?
So I did what any curious dog parent does. I tested it myself. And over the past two years, I have tried every cleaning method out there. This is what I learned.
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Yes, Kongs Are Dishwasher Safe (But There Are Rules)
The short answer is yes. KONG Classic rubber toys are top rack dishwasher safe. You can toss them in with your regular dishes and use normal dishwasher detergent. I was honestly surprised when I found this out because I had been hand washing mine for months like I was doing it some kind of favor.
But here is the catch. There are a few rules you need to follow. If you skip them, you can damage the toy and potentially make it unsafe for your dog.
The Top Rack Rule Is Not Optional
I made the mistake of putting Biscuit’s KONG on the bottom rack once. Just once. I was in a rush and did not think it mattered. When the cycle finished and I opened the dishwasher, the toy had warped slightly on one side. It was still usable but it felt different. That is because the bottom rack sits too close to the heating element and the rubber cannot handle that level of direct heat over time.
Top rack only. Every single time.
Skip the Heated Dry Cycle
This one surprised me. Even on the top rack, the heated drying cycle can be too much for the rubber. I now turn off the heated dry every time I run a load with KONG toys in it. I just pull them out and let them air dry on a dish rack near the window. It adds maybe five extra minutes to my routine and the toys have lasted so much longer because of it.
What Happens When the Dishwasher Is Not Enough?
There are some nights where Biscuit finds a forgotten KONG behind the couch. You know the one. It has been there for three days with dried peanut butter and kibble cemented inside it like concrete. On those nights, the dishwasher alone is not going to cut it.
Here is my go to deep clean routine when things get serious:
| Cleaning Method | Best For | Time Needed |
| Top rack dishwasher | Regular weekly cleaning | 1 to 2 hours (full cycle) |
| Warm soapy water soak | Dried or stubborn residue | At least 1 hour soak |
| Bottle brush scrub | Hard to reach inner areas | 5 to 10 minutes |
| Quick rinse | Light slobber after play | 1 to 2 minutes |
My process for a deep clean is simple. I fill a large bowl with warm water and a squeeze of dish soap. I drop the KONG in and let it soak for at least an hour. Then I use a bottle brush to scrub the inside. A chopstick is also a genius tool for poking out stuck treats. I saw that tip on the KONG website and it genuinely changed my life.
Different KONG Colors, Same Dishwasher Rules
One thing I did not know when I first bought a KONG is that they come in different rubber formulas for different types of dogs. But the good news is that the dishwasher rules apply across the board.
| KONG Color | Best For | Dishwasher Safe |
| Pink or Blue | Puppies and teething dogs | Yes, top rack |
| Red | Average adult dogs | Yes, top rack |
| Black | Strong chewers and power chewers | Yes, top rack |
| Purple | Senior dogs with sensitive teeth | Yes, top rack |
Biscuit is a medium sized adult dog so we use the red one. But my neighbor has a senior Labrador and she uses the purple KONG. She asked me the same question I once had: are Kongs dishwasher safe for the softer ones? Yes. Same rules, same top rack, no heated dry.
How Often Should You Actually Clean a KONG
I will be honest. In the beginning, I was not cleaning Biscuit’s KONG as often as I should have been. I would rinse it quickly and call it done. Then I learned that any toy stuffed with food should really be washed after every single use. Peanut butter, wet kibble, and soft treats can grow bacteria fast, especially in the deep hollow center of the toy.
Now I keep three KONGs in rotation. One is in use, one is frozen and ready to go, and one is either in the dishwasher or drying. It sounds like a lot but it took me about a week to build the habit and now it is just part of my routine.
Signs Your KONG Needs More Than Just a Wash
Sometimes a clean toy is not enough. If you notice any of these things, it is time to replace the toy entirely:
The rubber feels thin or starts to crumble. The smell does not go away even after a full wash. There are visible cracks or chunks missing. The toy has become sticky even after drying.
That sticky feeling is something I experienced with one of Biscuit’s older KONGs. It was not dirty. It was just worn down from repeated dishwasher cycles over a long period. The rubber had reached the end of its life. I replaced it the same week.
Hand Washing vs Dishwasher: Which One Is Actually Better
I get asked this a lot by other dog owners in my neighborhood. They want to know if hand washing is safer than using the dishwasher. Here is my honest take after doing both for over two years.
The dishwasher is more convenient and does a great job for regular weekly cleaning. But hand washing gives you more control for deep cleaning sessions. I use both depending on the situation.
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If the KONG is lightly used and I just need a standard clean, I toss it in the dishwasher on the top rack. If it has been sitting somewhere for a few days with dried treats inside, I do a soak and scrub first, then run it through the dishwasher.
Some dog owners prefer to use vinegar instead of regular dishwasher detergent because it is a natural cleaner with no harsh chemicals. I have tried both. Regular detergent works fine and the KONG company confirms it is safe to use. But if your dog has sensitivities, the vinegar route is worth trying.
Why Keeping Your KONG Clean Actually Matters
I know it sounds obvious but I did not fully appreciate this until Biscuit had a mild stomach upset one week. I looked at his toy and realized I had skipped cleaning it for several days. The inside of a KONG can become a breeding ground for bacteria, mold, and food residue if you are not on top of it. Dogs chew on these toys for long sessions and lick deep inside them. Anything growing in there goes straight into their system.
Cleaning the KONG regularly is not just about hygiene for your home. It is about protecting your dog. Since I started washing it after every use, Biscuit has not had any stomach issues related to his toys. That is enough motivation for me to keep the routine going.
Quick Tips I Wish I Knew From Day One
When I first bought a KONG, I had no idea there was this much to know about cleaning it. Here are the things I wish someone had told me earlier:
Always use the top rack and skip the heated dry cycle. Air drying near a window works perfectly. Keep a bottle brush next to the sink so it is always ready. Soak dried treat residue in warm soapy water before scrubbing. Rotate two or three KONGs so you always have a clean one ready. Inspect the toy every time you wash it. Catching wear early keeps your dog safe. A chopstick is genuinely useful for poking out trapped treats.
Final Thoughts
So, are Kongs dishwasher safe? Yes, they absolutely are. But knowing that is just the starting point. The top rack rule, skipping the heated dry, and building a regular cleaning routine are what actually make a difference for the long term safety and life of the toy.
I spent way too long hand washing Biscuit’s KONG out of caution when the dishwasher would have done the job just fine. Now I know better. And honestly, making KONG cleaning part of my weekly dish cycle has made me a much more consistent dog parent overall.
If you are still hand washing out of habit or fear of ruining the toy, try tossing it on the top rack this week. Just remember to turn off the heated dry. Your dog will have a clean toy ready to go and you will have one less thing to stress about.
FAQ: Are Kongs Dishwasher Safe?
Are Kongs dishwasher safe on all wash cycles?
No, not all cycles work well. KONG rubber toys are safe only on the top rack with no heated dry cycle. The heat from drying can warp the rubber over time.
What cleaning tool works best inside a KONG?
A bottle brush is the most effective tool for scrubbing inside a KONG. A chopstick also works great for pushing out stuck or dried treats from the hollow center.
Can I use regular dish soap or do I need a special cleaner?
Regular dish soap works just fine. The KONG company confirms standard dishwasher detergent is safe to use. If your dog has skin or stomach sensitivities, plain white vinegar is a natural and chemical free option worth trying.
How do I know when a KONG rubber toy needs to be replaced?
Look for cracks, thin spots, or rubber that feels crumbly. If the toy smells bad even after a full wash, or turns sticky when dry, it has worn out and should be swapped out for a new one.
Does putting a KONG in the dishwasher shorten its lifespan?
Repeated high heat cycles can wear down the natural rubber faster than hand washing. Skipping the heated dry cycle helps a lot. Rotating two or three KONGs reduces how often each one goes through the dishwasher, which extends their life.