18V ONE+™ ½ Gallon Chemical Fogger/Mister WITH 2AH BATTERY & CHARGER

Model: #P2850

4.4 | 453 Reviews
  Protect your yard and home with the RYOBI 18V ONE+™ DEFENDER Chemical Fogger/Mister. This versatile fogger delivers powerful results when spraying fungicides, herbicides, insecticides and other treatment solutions. With its lightweight and portable design, you can maneuver and treat any part of your yard with ease. This powerful fogger covers up to 1,000 square feet per minute and 10,000 square feet per battery charge with instant, hassle-free starting. Best of all, the atomized particles travel up to 15 feet in height and settle into those hard to reach spaces for impactful results. Defend your yard and home from mold, weeds, bugs and so much more with the RYOBI 18V ONE+ Multi-Purpose Fogger.


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This product is covered by a 3-year limited warranty.

The RYOBI 18V ONE+ System features over 225 unique products, giving you the ultimate in versatility and selection to get the job done.

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  • Coverage: Up to 1,000 Square Feet Per Minute
  • Coverage: Up to 10,000 Square Feet Per Charger
  • Tank Capacity: ½ Gallon
  • Weight: 7.2 lbs.
  • Warranty: 3 Year Limited


  • 18V ONE+™ Defender Multi-purpose Fogger
  • ½ Gallon Chemical Tank
  • 18V ONE+™ 2.0Ah Battery
  • 18V ONE+™ Compact Battery Charger
  • Operators Manual


18V ONE+™ ½ Gallon Chemical Fogger/Mister WITH 2AH BATTERY & CHARGER
18V ONE+ 1/2 Gallon Chemical Fogger/Mister is rated 4.4 out of 5 by 453.
Rated 2 out of 5 by from Mr. mosquito sprayer Received a Ryobi Mr. fogger for a present used it three times May before and started leaking. Returned it to Home Depot got a Nother one. It started leaking two or three times after use called customer service. They gave me the address of a repair facility called Rogers small engines. They said they weren’t dealing with Ryobi they had mini on the shelf.
Date published: 2023-11-07
Rated 5 out of 5 by from Love this Mosquito sprayer! The mosquitos were literally eating us alive at our coastal Villa! This sprayer saved our life. I previously purchased another brand backpack fogger and as a female it was too heavy & cumbersome to use. This item is easy to work with. Not alot of moving parts. Turn it on and go...
Date published: 2023-10-20
Rated 1 out of 5 by from Waste of money I have purchased two and after 2-3 months they leak so they dont spray!! I have contacted customer service with no solutions to my problem. I am an avid buyer of all Ryobi products.... but not this one!
Date published: 2023-10-04
Rated 5 out of 5 by from Fantastic Compared to other foggers this is the best, no waiting for warmup like propane
Date published: 2023-09-27
Rated 4 out of 5 by from Another Ryobi hit. Just purchased this fogger and used one time. If seems to do a great job but has a learning curve as many tools do. Loud and uses alot of battery power. Does everything I expected it to do.
Date published: 2023-09-11
Rated 5 out of 5 by from Great Multipurpose Tool My wife loves this tool! So many uses. We didn't realize the possibilities!
Date published: 2023-09-09
Rated 1 out of 5 by from poor warranty service On 2021-07-24 I purchased a Ryobi fogger mister. Just over a year later it developed a sever leak and became unusable. This was in the middle of mosquito season so I immediately purchased another unit on 2022-08-04. Within months that unit developed the same problem. I called Ryobi support and found out I had to take the units to a local authorized repair center. Living in Sarasota, FL I was surprised to learn the closest repair center was 4 Star Power Equipment in Englewood, FL. I looked up the address and saw their hours, they were open till 1:00 on Saturdays. I drove down on July 2 and when I got there I found a paper note on the door saying they decided to take a long holiday weekend and were closed. I went back down on Jul. 6 and dropped the units off. I called Jul. 25 and they were waiting on parts and said call back in a week. Called back Aug. 8 and they said it should be ready by the end of the week and they would call me. I called them Aug. 23 and got a recorded message they were closed to go to wedding and would return on Aug. 30.
Date published: 2023-08-24
Rated 5 out of 5 by from Works great. I bought this 3 weeks ago and it works great. Just as I expected. Blows a steady mist right where you point it.
Date published: 2023-08-19
Rated 5 out of 5 by from Great Tool! Highly Recommended! Works great in my vineyard and garden! Highly recommended!
Date published: 2023-08-18
Rated 3 out of 5 by from Works, but needs a little work Just finished my first mosquito treatment. Having some similar issues other described as far as needing some agitation to produce steady mist. Seems to work fairly well otherwise but would like for it to be more consistent/reliable. Also would recommend upgrading the battery. The included 2.0 Ah runs out pretty quick, even in my small yard.
Date published: 2023-08-16
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