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Internet # 325046690

Model # 704710B

Store SKU # 348476

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32 oz. Ready-to-Spray 2-in-1 Moss and Algae Killer

$19.97
  • Fast-acting moss, algae, mildew and lichen killer
  • Kills within hours and lasts for up to 12 months
  • Formula produces no unpleasant odor and is non-staining
  • View More Details

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Product Details

About This Product

BioAdvanced 2-in-1 Moss and Algae Killer and Cleaner kills moss, algae and lichen. It acts like 2 products in 1, treating lawns and patios plus roofs, fences, ornamental gardens, decks, hardscapes, buildings, and exterior home surfaces. The no-odor, non-staining formula will kill listed build up in hours and protect for months, without harming your lawn. It also kills mold and mildew1, all without staining. It can be used at any time during the year. Use on lawns only when temperatures don’t exceed 85° F. Just hook the bottle to your hose and it is ready to spray. BioAdvanced 2-in-1 Moss and Algae Killer and Cleaner Ready-to-Spray measures 32 oz.s. Children and pets can reenter area after product has dried. BioAdvanced. Get More From The Blue Bottle. When used as directed. 1-Not including species considered public health pests.

Highlights

Product Information

Internet # 325046690

Model # 704710B

Store SKU # 348476

Specifications

Dimensions

Container Size (oz.)

32

Product Size

32 OZ-Ounce

Product Width (in.)

5.188 in

Details

Application Type

Drench

Area of Use

Driveway, Landscape Bed, Lawn, Patio

Compatible Grass Type

All Purpose

Concentrated or Ready to Use

Ready to use

Emergent Type

Pre and Post Emergent

Form

Liquid

Organic

Non-Organic

Pack Size

1

Returnable

90-Day

Safe For

Not Safe for Kids and Pets

Safe for Edibles

No

Spray Application Type

Hose End Sprayer

Weed Type

Moss, Moss, Liverworts, and Algae

Questions & Answers

Will it damage Trex decking?
ByOct 9, 2026
1 Answer | 
Answer This Question

I would not recommend applying BioAdvanced 2-in-1 Moss & Algae Killer to Trex decking without confirmation from Trex. The BioAdvanced label lists cedar, redwood, and CCA-treated wood decks, but does not specifically list Trex composite decking.

By|Oct 12, 2026


    Will product damage mortar around bricks
    ByOct 9, 2026
    1 Answer | 
    Answer This Question

    BioAdvanced 2-in-1 Moss & Algae Killer is labeled for use on brick, stone, and concrete walkways and is described as non-staining when used as directed. However, we cannot guarantee compatibility with all mortar types. We recommend testing a small, inconspicuous area first and following the product label directions.

    By|Oct 12, 2026


      Does it work on asphalt roof shingles
      BySep 29, 2026
      1 Answer | 
      Answer This Question

      Yes. BioAdvanced 2-in-1 Moss & Algae Killer & Cleaner can be used on roofs and composition shingles, including asphalt composition roof shingles. Follow the product label directions when applying.

      By|Sep 29, 2026


        How many SF does a bottle treat?
        BySep 8, 2026
        1 Answer | 
        Answer This Question

        Our BioAdvanced 2 in 1 Moss and Algae killer RTS 32 oz bottle treats up to 500 sq ft.

        By|Sep 10, 2026


          is it safe to use on a shingled roof ?
          ByAug 31, 2026
          1 Answer | 
          Answer This Question

          Hi, Phil! Yes, BioAdvanced 2 in 1 Moss & Algae Killer & Cleaner can be used on a composite or asphalt shingled roof. -Madison

          By|Oct 16, 2026

            (1)

            Can this product be safely used on an EPDM flat rubber roof to remove algae and moss growth?
            ByMay 29, 2026
            1 Answer | 
            Answer This Question

            Hi, Keith. BioAdvanced 2 in 1 Moss & Algae Killer & Cleaner has not been tested on EPDM rubber. I would recommend spot testing in a small, inconspicuous area prior to applying to the entire area. -Madison

            By|May 29, 2026


              Wii this work for alge/moss that is growing on dirt in our dog-run?
              ByJan 27, 2026
              0 Answer | 
              Answer This Question

              Wii this work for alge/moss that is growing on dirt in our dog-run?
              ByJan 27, 2026
              0 Answer | 
              Answer This Question

              Viewing 1-8 of 55

              Customer Reviews

              4.1 out of 5

              • 4.1 out of 523 reviews
              • 33% recommend this product
              Filter by:
              Showing 1-10 of 523 reviews
              Moss stay away
              [This review was collected as part of a promotion.] Sprayed these steps leading to my basement a few days ago and the moss already appears to be dying. Hopefully it will fully stay away next year! I read that it’s good to do when prepping the house for winter.
              by
              Response from BioAdvancedNov 4, 2026
              Wonderful! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                It works great
                [This review was collected as part of a promotion.] Here is where I’d use the product, the photo is a before, I do not have an after quite yet but it’s worked wonders so far!!! Would definitely recommend.
                by
                Response from BioAdvancedNov 2, 2026
                Wonderful! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                  Starts working immediately
                  [This review was collected as part of a promotion.] Instructions were very clear! I applied the product as directed and immediately started seeing results! Package was sealed well and the bottle was full of the product!
                  by
                  Response from BioAdvancedOct 23, 2026
                  We love hearing when a product makes outdoor cleanup feel more rewarding! Here’s to keeping your outdoor spaces looking their best with less hassle.
                    Clears most moss
                    [This review was collected as part of a promotion.] I use this in a few places the first was on a fabric seat cushion. It didn’t quite get the moss off completely but it worked pretty good. The second place I used. It was on concrete next to my hot tub. It did a pretty good job. I’m guessing this stuff needs multiple treatments to work really well.
                    by
                    Response from BioAdvancedOct 5, 2026
                    Great! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                      Good spray to use to clean up algae!
                      [This review was collected as part of a promotion.] So far this moss and algae spray is helping make my house and deck area look better. It was covered and now it looks a lot cleaner then before! It was easy to attach to the hose to spray. I did spray it when my animals were not around for safety. It dried pretty normal but it was also really hot outside.
                      by
                      Response from BioAdvancedSep 25, 2026
                      Great! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                        Works well on moss and algae with even application and long-lasting results
                        [This review was collected as part of a promotion.] This really helped get rid of the moss and algae. It dried fairly quickly after I applied it, and the spray covered the area evenly. I also like that I don't have to apply it very often to see results. The effects have held up well over time, and I noticed the moss and algae gradually breaking down and disappearing. It's easy to use and has made the treated area look much cleaner.
                        by
                        Response from BioAdvancedSep 18, 2026
                        Thanks for the great feedback! We’re so glad to hear the product helped tackle the moss and algae and that you found the spray easy to apply evenly. It’s great to know the results lasted and helped leave your treated area looking cleaner.
                          Not an effective moss killer
                          [This review was collected as part of a promotion.] My driveway has lots of moss buildup from the long winter rain and minimal sunlight from all the surrounding trees. The direction to set up was easy to follow, took less than 5 min to assemble and start. I sprayed the entire driveway and the step. I waited for it to dry like the instructions. About 5 days later, we had heavy rain. Still, there were no visible changes to the moss. I’m disappointed.
                          by
                          Response from BioAdvancedSep 18, 2026
                          Thank you for taking the time to share your detailed feedback. We’re sorry to hear that you didn’t see the results you expected after treating your driveway and step, especially after carefully following the directions and allowing the product time to work. We understand how disappointing that can be. We’d appreciate the opportunity to learn more about your experience and help address your concerns. Please reach out to our Consumer Affairs team at consumeraffairs@bioadvanced.com, available Monday through Friday, from 8:30 AM to 5:00 PM CT. Our team will be happy to assist you further.
                            Helped with ongoing moss issues in lawn
                            [This review was collected as part of a promotion.] Applied in an area that wasn’t draining well. Used this to kill off the moss then did some core aeration to improve drainage. Seems to be working.
                            by
                            Response from BioAdvancedSep 17, 2026
                            Wonderful! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                              Highly recommend for moss and algae
                              [This review was collected as part of a promotion.] The BioAdvanced 2-in-1 moss and algae killer performed well, eliminating the algae growing next to my house. It turned yellow after only a few hours. And after a while, it turned brownish. A one-hose-end application cleans up siding and decking without staining. There’s no real chemical scent. Drying time depends on how much you use.
                              by
                              Response from BioAdvancedSep 16, 2026
                              Wonderful! We're glad to hear of your positive experience with BioAdvanced 2 In 1 Moss & Algae Killer & Cleaner. Thank you for taking the time to share your success!
                                Will work with repeated applications.
                                [This review was collected as part of a promotion.] The photo with the product in it is the after picture. It did help after one application, there was a slight smell but not bad. Drying time was normal for a wet surface and I'm sure it would have taken more algae off after multiple uses. Overall I gave it three stars because I only had time to use it once. This definitely a product that is worth looking into to clean and keep algae and moss away.
                                by
                                Response from BioAdvancedSep 9, 2026
                                Thanks for giving 2-in-1 Moss & Algae Killer & Cleaner a first run and for sharing the after photo! You're right that heavier build-up usually takes more than one pass. Quick tip: the formula kills moss and algae within hours (it turns yellow, then brown), but the dead growth still needs to be rinsed or brushed off, and you can reapply every two weeks for stubborn spots. Once you've had time for a second application, we'd love to hear how it goes
                                  Showing 1-10 of 523 reviews

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                                  Product Snapshot

                                  Ideal for customers who want fast moss and algae removal, ensuring protection for months.
                                  Ideal for customers who want quick, effective weed killing with a convenient spray wand.
                                  Ideal for customers wanting dual-action weed control, ensuring 4-month prevention and fast results.
                                  Must-have for anyone looking to control tough weeds and brush with ease.

                                  Coverage Area

                                  Treats various outdoor surfaces
                                  Up to 8 gallons of solution

                                  Concentrate or Ready-to-Use

                                  Concentrated

                                  Rainproof

                                  Visible Results Time

                                  Within hours
                                  Within hours
                                  As fast as 6 hours
                                  In hours

                                  Residual Effectiveness

                                  For months
                                  Days to 1-2 weeks
                                  Up to 4 months