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Boric acid for roaches

Discussion in 'Issues, Disease and Pests' started by Russell, Nov 13, 2020.

  1. Russell

    Russell New Member

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    Hi, it's me again, the title says it all. I've lately had some problems with roaches munching on the roots of my seidenfadenia mitrata, tricocentrum carthagenense and more. I know boric acid is a very effective roach killer but i don't know how to use it, I've heard to add 50 flour and 50 boric acid and sugar but I'm not soo sure, how do you mix yours. Thanks
     
  2. Ray

    Ray Orchid Iconoclast Supporting Member

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    There are many formulas.

    2 parts boric acid, 2 parts flour, 1 part sugar. Add water to make a thick paste.

    50/50 boric acid and flour, make a paste with Karo syrup.

    50/50 boric acid and peanut butter.

    Need it to be waterproof for the greenhouse? Melt about 1/4 pound of candle wax, then slowly stir in about 1/4 cup sugar and 4 ounces boric acid powder. When thoroughly mixed, pour into a pan, creating a 1/4″ to 1/2″ thick slab. Cut or break into chunks, and distribute around the greenhouse.
     
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  3. Russell

    Russell New Member

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    Thanks Ray, I already made some pellets. I'll try these also. I really like the waterproof ones though.
     
  4. Ray

    Ray Orchid Iconoclast Supporting Member

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    Yeah, I used the waxy ones in the greenhouse, mostly as an ant bait.
     
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  5. Russell

    Russell New Member

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    Hello Ray, i made the mixture again.
    Could you tell me if the consistency is enough or should I add more water. IMG_20201128_153256.jpg IMG_20201128_153245.jpg IMG_20201128_153155.jpg unfortunately I have a video that can't be uploaded here so I hope these pictures help.
     
  6. Ray

    Ray Orchid Iconoclast Supporting Member

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    No need to thin it.
     
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  7. Russell

    Russell New Member

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    Thanks