
Despite regular care and maintenance, I know most of us who keep our boats closed and locked up for days, sometimes weeks, still open up to a not-so-fresh smelling boat—see “Managing Holding Tank Odors: For Fresh Water and Salt Water.” Like most of you and as a long-time sailor, I am aware of this and have pretty much learned to expect and accept it, within reason.
Although one’s immediate reaction is often to blame the sanitation components, the reality is that smells can come from a variety of places. A common source, of course, is the head. But not to be neglected are the bilge, garbage left onboard from the last trip, the combination of products onboard, etc. Even empty soft drink and beer cans can develop an odor when left inside a hot cabin for a while.

Tips to Reduce Odors
So, acknowledging this, if you’re leaving for two or more days, taking out the garbage and empty cans is a great first step. If your ice box or cooler is not refrigerated, or is turned off when leaving, the cover or lid should be removed or left open. Like a home fridge, there is nothing smellier than a fridge left closed when not working. Even after cleaning the rubber seals, the odor may have been absorbed in the rubber seal and remains difficult to get rid of. Hint: If you want to clean and rejuvenate your rubber seals, I use Pine-Sol cleaner. Spread some on the rubber surfaces and let it soak in. It works great to bring your rubber seals and components back to almost new condition.
For more info about everyday products that I keep and use onboard, you can check out this video.
However, if you’ve done your proper maintenance and followed the above steps, but still want a fresher smelling boat, this affordable, rechargeable air purifier delivers.
Safety Note: There are some risks that should be considered. Since this device generates ozone, albeit at low levels, this can cause some health issues related to COPD for example—especially in small enclosed spaces with little or no ventilation. Do not leave it on while you are onboard. Another effect of ozone is that is makes dust particles stick to surfaces. Lastly, higher levels of ozone can cause nearby rubber components to dry and crack—do not leave it on for extended periods of time, but rather use it as a chemical treatment for odors as needed. Although this product does delivers on it’s intended purpose, please be aware of these risks.
Air Purifier Test
Since I’m always on the lookout to learn and find new ideas and products, I started to see many social media posts about an air purifier that claims to be the latest and greatest wonder product.
Out of an abundance of precaution and security, I rarely click on links found on these social media posts. Instead, I search for the product listing on safer sites like Google, Amazon, etc.
First, I read the reviews and even post questions when possible. Once I have some level of confidence the product appears legitimate, I purchase the item with my own money, so I can test and use the product and report back honestly and fairly.
What We Tested

This is the case of the Ionizer Air Purifier, which caught my attention. It claims to effectively clean and filter the air and remove smells. Plus, it is compact, quiet and requires no maintenance other than recharging. Sounds too good to be true, right?
Most posts and ads on social media are selling these units for more than $85 each with a small rebate if buying two or more units. I was able to find the same item on Amazon for $35 each and purchased two.
Note: Even though this test is only months old, the specific ionizer we tested is no longer widely available under the same name. Similar “smart pet odor purifier” units are still sold for litter boxes and small spaces. Look for a compact, rechargeable ionizer with an advertised 10–20 day runtime, motion sensor, and wall/ceiling mount, and expect to pay under about 40 USD.

Once I received them, I opened one and set it for an initial overnight charge. Each unit comes with its own USB to micro-USB charge cable, mounting bracket, a 3M peel/stick mounting pad and a manual. The packaging was very well made and labeled the product as Smart Pet Odor Purifier. But really, odor is odor, so this is not a concern.
How We Tested

Since it is winter here in Canada and my boat is all wrapped up for winter, I still wanted to test it. So, I started with the smelliest part of the house—the kitchen garbage cabinet. I suspect all readers, at one time or other, have opened their own garbage container or cabinet and have been hit with a nasty smell.

With my wife’s collaboration (and permission), we did not empty or change the garbage bag for 10 days, leaving table and cooking scraps, such as fish, meat, chicken, coffee ground, etc. inside. And yes, it was getting pretty smelly in there—even in the house. Also, not to be ignored, the many cleaning products stored in the same cabinet also contributed to this colorful mosaic of odors.
After the smell was getting on our nerves, I put the air purifier inside the cabinet. Using a Post-it note, I wrote the date when I started and each time that I needed to recharge it. Each charge lasted 16 days, which was impressive.
Test Results
What was more impressive is that it only took about 45 minutes for the cabinet to stop smelling when we opened it. We left the full garbage bag there for another two days and the air purifier delivered the same great performance. After changing the bag, I left the device inside the cabinet for about eight weeks. The reduction of smells, even from the cleaning products inside the cabinet, was very noticeable.
For the fun of it, I also dropped the device inside an old, smelly plastic garbage can that had absorbed a bad smell into its plastic over the years. I closed the lid and went back 30 minutes later and stuck my head in the garbage can. To my great surprise and that of my nose, the smell was practically non existent. Now, I knew that once the device was removed, it would not be long for the smell to return. Without cleaning the garbage can, odors would return without the device. However, for the onboard purposes of this device, these tests were very convincing. After all, both devices would be installed permanently inside the boat—one in the head and another in the main cabin.
Pros and Cons
What I like:
- The compact size and solid build.
- It comes with all required install and charge accessories.
- Easy to charge and operate.
- The single light clearly lets you know what is happening.
- Easy twist on and off the mount bracket for charging or moving to another location.
- The price on Amazon, which is half the price listed on social media posts.
- Super low maintenance—no filter changes or cleaning.
What I don’t like:
- I am unsure if the device is operating while charging and if it can be left plugged in.
- The mode indicator light is somewhat bright. I travelled with it last month and had it on the toilet water tank in my hotel room, and had to close the door as the light was a little too bright. On the other hand, it was kind of a night light, so we knew where the bathroom was.
Conclusion
If you can find it at a good price, under $40 USD, I would recommend the air purifier to keep your boat smelling fresh (see safety note above for proper use). Remember, it isn’t a replacement for regular and proper tank and sanitation line maintenance, make sure to review “Managing Holding Tank Odors: For Fresh Water and Salt Water” to keep your systems in order.












What are your thoughts on the AirLock purifier? It’s designed to be left on continuously.
Hi Frank, I will look into that purifier. Thanks for sharing…and reading!
Frank, which brand / model of Airlock purifier are you referring to? I see one at over $400 per unit.
Great recommendation. I found these for $25 on Walmart.com today. Will try them out, too.
Thanks Matthew, good to know Walmart is another option.
I have used various models over the years and they certainly work to remove odors. But one has to check if Ozone is being used, and if, in which quantity. Not only high concentrations of Ozone are unsafe for humans. But Ozone can deteriorate electronic equipment. If I use it I do so in a localized manner and for a very sort period of there are electronics nearby.
Ciao Angel, You’re the second person to tell me about possible ozone being used. I will certainly look into this. Interesting! Gracias mi amigo!
Thx for the article, definitely something I’d like to try on my boat. Any idea what the recommended sq footage is for one of these units? Wondering if I need more than one for my Catalina 36?
Hi Travis, from I’ve been trying and reading, you should more then good with two. I bought two, one for the head and one I’ll install in the main cabin, lower to the ground.
Btw this is Amazon link Air Purifier, Rechargeable 4000mAh Smart Cat Litter Deodorizer, Easy InstallationLeaving Your Air Clean Fresher for Bathroom Wardrobe Kitchen (White A 1pcs) https://a.co/d/0du1JF4v
I had an ionizing purifier in my house about 20 years ago. It plworked, but produced ozone and was very hard on my asthma; who knows if it caused permanent damage, but it was discarded because of that.
Hi Matthew, so far, it looks like this is not a particular concern with this model.
But will definitely keep researching..
Thanks you – timely article!
I’ve used Ozone creation Ionizers in basements – very effective! but damages rubber and plastics. So be sure to avoid Ozone generators for this application.
It appears that this unit is a “safe” ionizer similar to the much more expensive AirLock Voyager. That product makes a big deal about their ionizer safety.
The Amazon link in the article yields this product as “not available”
There is a suggestion on Amazon for two similar versions that are available (not PRime, and Shipping from China – unsure about what tariff $’s might be added.
Would love to get a PS comparison between the available ionizer solutions: high-end AirLock down to these lower cost solutions…
Thanks David.
Try this link Amazon link for Air Purifier, Rechargeable 4000mAh Smart Cat Litter Deodorizer, Easy InstallationLeaving Your Air Clean Fresher for Bathroom Wardrobe Kitchen (White A 1pcs) https://a.co/d/0du1JF4v
It appears, I’ll be doing more research.
…one more thing: product description warns about high internal voltages, which makes me wonder about spark-safe in fume areas: engine compartments and adjacent bilges, near gas galley stoves, etc…
Thank you
This link in the article bring you to an unavailable provider. Here is an updated link
Amazon link Air Purifier, Rechargeable 4000mAh Smart Cat Litter Deodorizer, Easy InstallationLeaving Your Air Clean Fresher for Bathroom Wardrobe Kitchen (White A 1pcs) https://a.co/d/0du1JF4v
Sounds great, but I can’t find a Hashi Ionic Air Purifier on Amazon, Walmart, or anywhere today (4/1/26) . Did anyone find this?
Clarification…. It can be found on Amazon, but it is out-of-stock with no info on when I might be available.
Try this is Amazon link Air Purifier, Rechargeable 4000mAh Smart Cat Litter Deodorizer, Easy InstallationLeaving Your Air Clean Fresher for Bathroom Wardrobe Kitchen (White A 1pcs) https://a.co/d/0du1JF4v
Here’s an alternative at $25 on Amazon…
You forgot the paste the Amazon link…
Another question about this device… Does the ozone it generates create a health risk? Here’s what an AI search says: “Key consideration:
• This device produces both negative ions and ozone as part of its dual purification technology
• Ozone exposure at high levels can irritate the respiratory system, particularly for people with asthma or respiratory sensitivities
• The EPA generally recommends keeping indoor ozone levels low
How to use it more safely:
• Use in well-ventilated spaces
• Take advantage of the adjustable output knob to control intensity
• Limit continuous operation time
• Avoid using it in bedrooms where you spend extended periods
If you have respiratory conditions, asthma, or health concerns, I’d (the AI bot) ecommend consulting with a healthcare professional before using this device.
From what I’ve read, so far, the level of ozone created, if any, is negligeable. But still researching!
… victim of FLOTUS’ policies: none of the USB-powered options are available in the US…
Try this is Amazon link Air Purifier, Rechargeable 4000mAh Smart Cat Litter Deodorizer, Easy InstallationLeaving Your Air Clean Fresher for Bathroom Wardrobe Kitchen (White A 1pcs) https://a.co/d/0du1JF4v
Marc, Do you know if this product is certified by the California Air Resources Board (CARB)?
Ed
Hi Ed, I have not idea. I’m in Canada and (normally) such product if and when sold in Canada need to be tested and then a CE stamp on the back (normally) indicates it has been approved. The two units I bought have the CE stamp. But do do check!
It appears that a lot of negative ion purifiers like what you tested have been pulled from market (based on a quick look for them on Amazon). I loved the article but fear that worries about litigation might have caused manufacturers to stop making these. AI tells me: Negative ion air purifiers are largely unavailable or discouraged because they often produce ozone, a dangerous lung irritant. Instead of removing contaminants, they make dust settle on surfaces and can increase VOC levels. Due to safety risks, low effectiveness, and potential respiratory issues, they have been replaced by superior HEPA filter technologies.
Why Negative Ion Purifiers Are Disappearing:
Ozone Production: Ionizers commonly generate ozone as a byproduct, which can trigger asthma and cause breathing problems, creating worse air quality.
Ineffectiveness: They do not remove particles; they make them stick to surfaces (walls, floors). These particles can easily become airborne again.
VOC Generation: Some studies suggest ionizers can increase the presence of volatile organic compounds (VOCs).
Health Hazards: Public health bodies often advise against them, as they can cause respiratory problems.
Superior Alternatives: HEPA filters are scientifically proven to trap 99.97% of particles, making ionizers obsolete, inefficient, and potentially dangerous, according to resources like.
Thanks Geoffrey. Since getting many similar comments I have also been researching. Amazon still sell these (see link on previous replies).
On some texts I’ve read, so far, it appears the ozone levels generate are extremely low with this device. Plus the application I intend to use it for should not be an issue.
But, not wanting to through caution to the wind, I will continue looking into this.
Thanks again Geoffrey. I appreciate the time you took to share your findings.
A few have also pointed out that ozone destroys rubber! It will destroy your seaboots and other rubber products kept onboard.
Hi Ralph, yes I read those, but, in my opinion, to affect rubber and other components, the ozone levels would have to be very high, over .05 PPM. I am not an expert of course, but I don’t believe this product produces anywhere near those levels. But, I will keep reading up! Thanks for taking time to comment.
Important note to readers: Please read: When testing this product (and others) I do so based on what they claim and are purposed to do. In this case, remove odors. However after reading many comments from readers and digging deeper, there are some risks that should be considered. Since this device generates ozone, albeit low levels, this can cause some health issues related to COPD for example, especially in small enclosed spaces with little or no ventilation. Another effect of ozone is that is makes dust particles stick to surfaces. Lastly, higher levels of ozone can cause nearby rubber components to dry and crack. So, although this product does delivers on it’s intended purpose, please be aware of these risks.
I agree that risks from this should be very low. Unfortunately, the updated Amazon link you shared also leads to a message there that the item is not available and they don’t know when it will be. To try something, I ordered from Amazon an AC plug in unit called Ion Pure Plug In Air Purifier for Home from Freeze2Trim that looks similar to the rechargable version you tested. I would paste the link here but it is very long.
Hey Geoffrey, try this link: it says available. I wanted something rechargeable or 12volt for the boat.
Amazon link
https://a.co/d/0hrTSvLK