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Captain Jack's Deadweed Non-Selective Weed Killer

SKU: BND2602
Regular price $19.25 $17.32
Unit price

Bonide Captain Jack's Deadweed Brew


Captain Jack's Deadweed Brew® (Formerly BurnOut Formula II® ) is a patented fast-acting weed, grass, algae, and moss killers that represent a new class of products for organic weed control that do not contain glyphosate or other toxic chemicals!  Utilizing concentrated and potent and non-staining fatty acids (soaps),  Captain Jack's Deadweed Brew is a non-selective herbicides and the best new top-of-the-line technology for fast-acting and through killing or suppression of many common annual, biennial, and perennial weeds, algae and mosses. A great organic product for use when conventional herbicides are banned or not desired!

For a larger, concentrated formula, with the same great results, check out FINALSAN!

How Does Captain Jack's Deadweed Brew Work?

Herbicidal soaps work by penetrating the waxy cuticle of plants, causing theFinalsan Organic Non-Selective Weed Kille RoundUp Alternative plant to dehydrate and die. The active ingredients accumulate in plants and cause intracellular damage, leading to cell death. Activity is non-selective and will kill plants the soap comes into contact with, but will not translocate to underground portions of the plant or harm the bark of mature, woody plants.  Can be safely sprayed around the base of trees, shrubs, hops, grapes without worry.  

Use on weeds within vegetable and flower gardens, landscaped areas, lawns (for spot treatment only), in the vicinity of small fruits and fruit trees, around and on buildings, sidewalks, fences, bark mulch, driveways, patios and gravel.  Use on moss and algae, around and on buildings, roofs, decks, sidewalks, fences, bark mulch, driveways, patios and gravel. Finalsan can even be used in cool weather. Areas can be planted five days after treatment.

Captain Jack's Deadweed brew reduces tree toxicity risks and leaves no harmful residue in the soil. It won’t stain bricks, concrete or asphalt and people and pets can re-enter areas once spray dries.

  • Great alternatives to conventional herbicides such as glyphosate!
  • Fast acting - visible results within hours!
  • Listed "For Organic Gardening".
  • Highly biodegradable, will not affect woody parts of plants - great for spraying at the base of trees or bushes; perfect for vineyards or for hops growers!
  • Dissipates quickly.
  • Does not stain brick, concrete or pavement.
  • No unpleasant odor as with other acid fatty acid products.
  • EPA registered & approved.
  • Quick reentry and no harmful residues.
  • Kill weeds without worrying about children, pets, animals or the environment!

 Captain Jack's Deadweed Brew Concentrate:

  • Small Easy To Kill Weeds:  Use a 3% solution (4 oz. per gallon).
  • Larger Established WeedsUse a 6% solution (8 oz. per gallon).
  • For Tougher to Kill Weeds, Vines, Brush and Sucker Control: Use a 9% solution (12 oz. per gallon).

Apply 2.5 gallons  of the diluted solution per 1,000 square foot (3 to 9 oz. per square yard).

Application Notes for Captain Jack's Deadweed Brew:

  • Damage will be visible within an hour to 2 days after spraying.
  • Repeat treatment every 2 to 3 weeks to control new weeds growing from seed and re-growth from bi-annual and perennial weeds.
  • Avoid spraying desirable plants or any over-spray.
  • Products can be applied in cold weather (55°F or above) when other organic weed killers may not work.
  • Can be used around pets and wildlife.

    Captain Jack's Deadweed Brew Ready-To-Use:

    • Caprylic Acid (C8 Fatty Acid) ........... 2.62%
    • Capric Acid (C10 Fatty Acid) ............ 2.17%

    Captain Jack's Deadweed Brew Concentrate:

    • Caprylic Acid (C8 Fatty Acid) .......... 44%
    • Capric Acid (C10 Fatty Acid) ........... 36%

    • 1 Quart Ready-To-Use (As Needed).
    • 1 Gallon Ready-To-Use (As Needed).
    • 1 Pint Concentrate (Covers 520 to 1,600 sq. ft.).
    • 1 Quart Concentrate (Covers 1,040 to 3,200 sq. ft.).

    For a larger, concentrated formula, with the same great results, check out FINALSAN!

    Label (RTU)


    Label (Conc.) 


      Our sister company, Green Earth Ag & Turf, brings a decade of experience as the U.S. leader in providing Professional Landscapers, Farmers and Indoor Growers like you the best in organic products for higher yields, aesthetics and profits!  Discounted professional or wholesale prices can be found there.

      to quickly and easily open a wholesale account with us or to get bulk and professional pricing. 

      You can also contact us directly at (866) 374-5101 or for the top technical and customer service in the industry.  

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      Customer Reviews

      Based on 2 reviews
      Works great!!v

      These products work so well. Finally, there’s a weed killer that doesn’t harm the environment!

      Lisa Oliva
      Kills invasive honeysuckle

      This is the best product I have ever found to get rid of invasive honeysuckle and poison ivy. One good soaking and the plant is dead. It even rained within a few hours of application and it still worked great.