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

Model: #P2850

4.5 | 397 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 396.
Rated 4 out of 5 by from Easy to use! I bought it today to help me out with these savage mosquitos. haha Its super easy to use.
Date published: 2022-09-15
Rated 1 out of 5 by from Complete crap I was so excited to get this product…charge the battery, fill it with insecticide and I am pumped to begin killing mosquitoes. Fire it up and it just blows air, there is not fog or anything getting any kind of mist unless I shook the unit. So disappointed and have mosquito bites to prove it !
Date published: 2022-09-15
Rated 5 out of 5 by from Works Great with Nice Distance I've owned a few of these types of fogger and I'm pretty impressed. This goes about twice the distance with the stream of fog. It also seems to break liquids down in to mist better than the others I've tried. The battery can cover a few acres without needing a charge too. I'm pretty impressed with Ryobi.
Date published: 2022-09-09
Rated 5 out of 5 by from Great product I recently bought to fog before our outdoor gathering best money I've spent. Fast and easy. Works perfectly!!
Date published: 2022-09-03
Rated 5 out of 5 by from Fogger works as described. Knocked down mosquitos as advertised, easy to use. So far, very happy with performance.
Date published: 2022-09-03
Rated 5 out of 5 by from Best tool ever I bought this a moth ago and it's awesome works way better than I thought it would.
Date published: 2022-08-29
Rated 5 out of 5 by from Works Great We use this to spray for mosquitos and other bugs and it works great!
Date published: 2022-08-18
Rated 5 out of 5 by from Excellent product Excellent product We just purchased it a few days ago and used it it works great ease-of-use .excellent coverage so glad we made this purchase
Date published: 2022-08-18
  • y_2022, m_9, d_19, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.34
  • cp_1, bvpage1
  • co_hasreviews, tv_14, tr_382
  • loc_en_US, sid_307244559, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_ryobioutdoortools