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Bonide Captain Jack's Lawnweed Brew is a 128 oz ready-to-use spray that quickly controls a broad spectrum of common lawn weeds, moss, algae, lichens, and diseases. Its iron-based active ingredient selectively targets unwanted plants without harming grass, delivering visible results within hours. Designed for professional-quality lawn care with easy application, it’s the go-to solution for millennials seeking a vibrant, healthy lawn that stands out.






| ASIN | B09G9HQ8XY |
| Active Ingredients | Iron |
| Best Sellers Rank | #141,224 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #417 in Weed Killers |
| Brand | Bonide |
| Customer Reviews | 3.4 3.4 out of 5 stars (217) |
| Global Trade Identification Number | 00037321026167 |
| Item Form | Spray |
| Item Weight | 8 pounds |
| Item model number | 2616 |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Bonide Products LLC |
| Product Dimensions | 4.63 x 7.5 x 12 inches |
| UPC | 037321026167 |
| Unit Count | 128.0 Fluid Ounces |
A**R
Green lawn…Not green and yellow!
Best way to get rid of dandelions! Does not kill grass. I used to get dandelions out with a weed prong. This was very backbreaking work and if any of the root was left in the ground, the weed would regrow again. I used this weed killing product this spring and yard looks fantastic… No dandelions!
J**E
Looking for organic weed killer that works… still looking
Unfortunately, product didn’t work on 95% on my weeds on my lawn. It didn’t come with the sprayer but I had my own wand so I used that. I waited 5 days to see results before posting this review. I Followed all the directions I have dollaweed, dandelions, and clovers on my lawn, most of them lived and the killer didn’t even make a dent. Sad that it didn’t work for me. Hoping this organic based formula would work. I don’t like resorting to dangerous chemicals. I will try something else. Returned
N**H
It works but you need alot
It’s to bad there isn’t a more concentrated version for a hose or something. I had to use both bottles for 1500sqft and it didn’t even kill everything. I had to do multiple passes on all of the weeds. It did work within an hour, I did notice some browning of the weeds and haven’t came back yet but it’s still overpriced and the fact has to use both bottles for it work is insane
J**E
All good
It's easy to use
S**S
Garden
Works n is easy
L**N
Does not kill Crab Grass but does kill other weeds
There was very little browning on the crab grass. I suppose once you get crab grass, the only way to get rid of it is to pull it out. Best defense is a pre-emergent in early spring.
E**Y
Non Toxic But Effective
This seems to be effective at killing dandelions and other weeds in our yard without any toxic chemicals. Has never harmed our grass and seems effective at killing anything we have sprayed it on. The sprayer is really good quality too- no issues with leaking or dripping
M**E
Not as Advertised
Bonide Captain Jack's Lawnweed Brew, 128 oz Ready-to-Use Spray with Power Wand, Fast-Acting Formula Controls Weeds, Moss, Algae, Lichens & Disease - I ordered a replacement for this when the first one did not come with the SPRAY WITH POWER WAND. A second one was sent to me, but it did not come with a sprayer either. The replacement did not even have a cap on the container. LawnBrew cannot be used without a sprayer so I had to buy a separate sprayer. The directions said that it could not be used with a fertilizer sprayer because of mixing the ingredients. I have not used the second LawnBrew with my new sprayer yet because of this inconvenience.
Trustpilot
2 days ago
3 weeks ago