Announcement

Collapse
No announcement yet.

Get Rid of Fungus Gnats For Good Using Mosquito Dunks

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Originally posted by festivus View Post
    Sorry Lola, but dunks don't work. They only slow down the infestation. The time wasted messing around with dunks just prolongs the problem and reduces yield. Same thing with Gnatrol. You end up with a resistant gnat thats even harder to eradicate. What worked best for me was to spray the rootball directly with pyrethium (FoxFarm's Bug Be Gone). The plant pulls it up thru the roots for a systemic effect.

    Death to the f'ing gnat hord!!
    Let me clear up something--you are 100% correct that there have been reported incidents of critters developing a resistance to the active ingredient in Gnatrol, Mosquito Dunks/Bits--bacillus thuringiensis israelensis (BTI). But if we understand WHEN to use BTI, your rate of success in battling fungus gnats and your pocket book will both improve.

    First--here is the Fungus Gnat lifecycle...



    The Mode of Action for BTI is "mid-gut membrane disruptor" (no chems) and is most effective against the young first instar larvae, which at the 4 o'clock position in the above pic. The bacteria must be ingested by the larva, after which a toxic protein crystal is released into the insect's gut. Larvae stop feeding and die.

    Fungus gnats life cycle is 20-28 days and as you can see, BTI is effective only 2-3 of those days. Huge draw back of Gnatrol is its short effective life of 48 hours, whereas Mosquito Bits/Dunks are constantly releasing BTI as moisture dissolves the carrier--which can take days/weeks.

    Strategic use of BTI is the key to success...as there are only a few days of the gnats life when it will work!

    Hope this helps.
    Between two evils, I always pick the one I never tried before. (Mae West)

    Nobody has a monopoly on good ideas! Nobody! (Kevin O'Leary)

    The more I learn, the more I learn how little I know. (Socrates)

    Somebody who agrees with me 80 percent of the time is a friend and ally, not a 20 percent traitor. (Reagan)

    Why are women are so uptight? They've got half the money and all the pussy. (DC Cab, 1983)

    If you think you know everything; you know nothing. If you think you know nothing; you know something. (Jayce O'Neal)

    sigpic

    Comment


      hi,
      thanks for this post, but when is the best time to use it then ?

      Comment


        Fungus Gnats

        Hi Folks,
        Just my pennies worth. In the UK we pay £20 for small bottle of Gnat Off from Ebay, more from your hydro shop. It contains Bacillus Thuringiensis, the same active bacteria as Thuricide. Only Thuricide is £6.58 for an 8oz bottle - no brainer!

        Bonide Thuricide (BT) 8oz
        Bonide's Thuricide is a liquid formulation of bacteria, Bacillus Thuringiensis (Bt), which is specific to leaf eating caterpillars. Controls loopers, cabbageworms, tomato hornworms, leaf rollers, gypsy moths and many others. The insects stop feeding and die within 2-3 days of ingestion. There is no residue problem, and being exempt from tolerance requirements, this product may be applied at recommended amounts up to the day of harvest. Will not harm beneficial insects. One 8 oz. bottle treats over 5,000 sq. ft.
        Directions for use:
        Mix 1-4 tsp. per gallon of water and apply at first sign of infestation.
        Repeat at weekly intervals as needed to maintain control.
        May be applied by hose or pressurized sprayers.
        Apply thoroughly to upper and lower leaf surfaces, but not to the point of excessive run-off.



        Stay safe

        The Chronic Pain Club - a resource for us all!


        My definition of an EXPERT; An 'EX' is a has-been & a 'SPURT' is a drip under pressure!

        ****************************** ****************************** ****************************** ***
        All difficult things have their origin in that which is easy, and great things in that which is small.
        Lao Tzu

        ****************************** ****************************** ****************************** ***
        No trees were killed in the sending of this message. However a large number of electrons were terribly inconvenienced.

        Comment


          Whats the usage rate on the dunks? Sprinkle ontop of the medium and then water or mix in with the watering?

          2012 OD
          https://www.icmag.com/ic/showthread.php?t=237622
          2K VERTICLE Flip-flop
          https://www.icmag.com/ic/showthread....09#post5436309

          Comment


            Dunks

            Take one Mosquito dunk break in half put in bowl and crush into powder. Just put powder on top of soil (my mother plants) water in. Never seen a white fly or gnat for all the years I been using them unless one sneaks in from outside and even then they won't colonize.You can put a dunk into your hydro rez too.
            Oregon Cherry pie

            Comment


              Should have said one half of a dunk per plant is what I use. In like a 3-5 gal container.
              Oregon Cherry pie

              Comment


                Originally posted by Iffy View Post
                Hi Folks,
                Just my pennies worth. In the UK we pay £20 for small bottle of Gnat Off from Ebay, more from your hydro shop. It contains Bacillus Thuringiensis, the same active bacteria as Thuricide. Only Thuricide is £6.58 for an 8oz bottle - no brainer!

                Bonide Thuricide (BT) 8oz
                Bonide's Thuricide is a liquid formulation of bacteria, Bacillus Thuringiensis (Bt), which is specific to leaf eating caterpillars. Controls loopers, cabbageworms, tomato hornworms, leaf rollers, gypsy moths and many others. The insects stop feeding and die within 2-3 days of ingestion. There is no residue problem, and being exempt from tolerance requirements, this product may be applied at recommended amounts up to the day of harvest. Will not harm beneficial insects. One 8 oz. bottle treats over 5,000 sq. ft.
                Directions for use:
                Mix 1-4 tsp. per gallon of water and apply at first sign of infestation.
                Repeat at weekly intervals as needed to maintain control.
                May be applied by hose or pressurized sprayers.
                Apply thoroughly to upper and lower leaf surfaces, but not to the point of excessive run-off.

                View Image

                Stay safe
                While I won't say that Thuricide won't work, it is not the ideal strain of Bacillus Thuringiensis for this application. Thuricide contains the strain kurstaki.

                For gnats we want to use Bacillus Thuringiensis israelensis.

                I have found the best deal to be Microbe Lift BMC.

                Be Lucky

                Current Karma OG Test Thread

                Originally posted by Greyskull
                Sorry its not chock full with landrace genes... blame joesy

                Comment


                  Originally posted by Some old dude View Post
                  Take one Mosquito dunk break in half put in bowl and crush into powder. Just put powder on top of soil (my mother plants) water in. Never seen a white fly or gnat for all the years I been using them unless one sneaks in from outside and even then they won't colonize.You can put a dunk into your hydro rez too.
                  Good prevention idea, however, I would recommend putting the dunk in a stocking or cheesecloth or similar as they tend to make a mess.
                  Be Lucky

                  Current Karma OG Test Thread

                  Originally posted by Greyskull
                  Sorry its not chock full with landrace genes... blame joesy

                  Comment


                    Great tip

                    Originally posted by Third Coast View Post
                    Good prevention idea, however, I would recommend putting the dunk in a stocking or cheesecloth or similar as they tend to make a mess.
                    That's a classic idea...!
                    Oregon Cherry pie

                    Comment


                      Hi Folks,
                      I've just sprayed all the surfaces of my growroom with Fendona. It's a contact pesticide that has high residual qualities. So it dries leaving a film of crystals that kill all insects on contact.
                      I think it may be restricted to Pest Control professionals in some countries but its not hard to get hold of. Its even safe in food prep areas but extremely harmful to aquatic life!

                      http://www.publichealth.basf.com/agr...ENDONA/FENDONA

                      Kind of 'belt-and-braces' I know but for those continually pestered by flying critters it may be the answer. my pal is an exterminator so it was free & I did it myself!
                      Stay safe

                      The Chronic Pain Club - a resource for us all!


                      My definition of an EXPERT; An 'EX' is a has-been & a 'SPURT' is a drip under pressure!

                      ****************************** ****************************** ****************************** ***
                      All difficult things have their origin in that which is easy, and great things in that which is small.
                      Lao Tzu

                      ****************************** ****************************** ****************************** ***
                      No trees were killed in the sending of this message. However a large number of electrons were terribly inconvenienced.

                      Comment


                        I used a half a dunk crushed up and put over the medium... Seems to have worked a little bit but my sticky traps are still being covered within 3-4 days. Any problem in crushing up another half a dunk and spreading it over the medium? They are 7&10gal smart pots so they are pretty large in surface area.

                        2012 OD
                        https://www.icmag.com/ic/showthread.php?t=237622
                        2K VERTICLE Flip-flop
                        https://www.icmag.com/ic/showthread....09#post5436309

                        Comment


                          ^ Anyone got input on this? Can you over due it with the dunks do the point it will cause any damage to the plant? I was thinking about crushing up a whole dunk per plant and re-applying...

                          2012 OD
                          https://www.icmag.com/ic/showthread.php?t=237622
                          2K VERTICLE Flip-flop
                          https://www.icmag.com/ic/showthread....09#post5436309

                          Comment


                            Dunks work awsome...they just need to be given sometime to work... I take a whole pack of Dunks..crush them up and toss em in a 300 gallon rez... after a couple of weeks Gnats are all Gone ..

                            Enstar2 works pretty insane as well...
                            Hall Of Fame

                            Comment


                              For soil Mosquito Bits are easier to use - same manufacturer and material as Dunks, just small pieces in a shaker container.

                              I tried to eradicate an infestation with Dunks/Bits and couldn't do it. Beat them back but not enough. Took three consecutive drenches with 2 teaspoons of Gnatrol per gallon of water to wipe them out. Also tried nematodes and AzaMax with similarly incomplete results.

                              Been months since I've seen one (knock wood) and I''m still adding Bits and doing 1 teaspoon per gallon of water Gnatrol drenches every time new soil comes into my grow. Also hgave a quarter inch of sand and a half inch of pea gravel on top of all soil as a barrier.

                              Comment


                                Could somebody confirm if these are flying root aphids or fungus knats or..?

                                I noticed this problem a couple weeks ago, when some of my bigger fan leafs just started falling off or would very easily fall if agitated. And now at 1 month into flowering it looks like my ladies are having a major deficiency problem. Does this look like root aphid/fungus knat symptoms to some of you pros?

                                All my ladies went into flower with nice green fat leaves, and now it looks like they've taken a major turn just one month in and idk what else it could be...I haven't fed them anything other than ro water with cal mag. Its fox farms ocean forest soil mixed with dry fruit and flower. I never had this problem before but I recently moved to a much warmer climate and it seems like my last grow this same thing happened and I thought it was an actual deficiency but now Im not so sure...Thank you guys so much for your time and help.
                                We all got a long time to grow

                                Comment

                                Working...
                                X