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

Model: #P2850

4.5 | 427 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.


Ryobi three year warranty logo

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.

View our current promotions for new product releases and the latest RYOBI savings!

Ryobi Help+

Your one stop destination for tips & techniques, manuals, troubleshooting, FAQs and more!


  • 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 Kit is rated 4.5 out of 5 by 423.
Rated 1 out of 5 by from Do not buy Everyone in awhile it will spray a little. Put your hand in front of it and nothing but air. The thing is worthless
Date published: 2023-05-22
Rated 1 out of 5 by from Not much of a fogger. Purchased to fog my back porch which gets mosquitos a couple times a year. Worked twice then clogged. Rinsed after using, ran water through and even tried alcohol to dissolve the clog. Replace the filter and tubing, but it only puts out a little when tilted down. Kind of a waste of money and only the second Ryobi product to disappoint me out of the 14 or so that I own.
Date published: 2023-05-20
Rated 5 out of 5 by from Great Service I want to thank Katherine from Customer Support. She was great to work with on my Fogger problem and took care of of it promptly. I would highly recommend customer service!
Date published: 2023-05-20
Rated 5 out of 5 by from Works great Works great so far been using around thw house for termites right and works great
Date published: 2023-05-11
Rated 2 out of 5 by from You can't call this a fogger My unit doesn't put out much is any fog. There' is a fine mist that barely makes my hand wet in front if it. There is plenty of air but no way the tiny amount of water is going 15 feet. I really really wanted this to work, it would take me hours to do the trees and bushes with this. THere has something wrong with my unit? For 100 bucks I need to keep expectations low, but this is not any better than a hand pump sprayer.
Date published: 2023-05-10
Rated 5 out of 5 by from Multiple features Purchased yesterday on April 29th 2023 at Home Depot. Tried Sunday (today) for the first time. Very easy to operate. It’s a replacement for our old propane operated heat Fogger. No need to worry about windy conditions it is powerful. I like that the agent I spray hits where I aim. With the heat type Fogger you would have a large moving cloud direct by winds. Besides mosquito control we can use for our garden spraying. Very versatile.
Date published: 2023-04-30
Rated 5 out of 5 by from Mosquito killer Great mosquito killer. Also good for putting out deer deterent.
Date published: 2023-04-17
Rated 1 out of 5 by from Disappointing I bought this fogger to spray insecticide on my yard. On the first use, it only would spray some times and then not spray at all. Even using only water. If I move the machine up and down maybe something maybe will come out of it. So disappointing at product.
Date published: 2023-04-17
Rated 5 out of 5 by from Super easy to use, lightweight, good range! Just came, already used outside and even with wind it has good range. I like that it's lightweight, adding to Ryobi collection of tools!
Date published: 2023-04-08
Rated 5 out of 5 by from Bye, bye mosquitoes! This worked really well and is a welcomed addition to my Ryobi arsenal.
Date published: 2023-03-27
  • y_2023, m_5, d_24, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasreviews, tv_14, tr_409
  • loc_en_US, sid_307244559, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_ryobioutdoortools