Anyone tried Mosquito Bits for fungus on orchids?

[jellycat]

I live in an area where there's a permanent fungus gnat problem in winter.

I use that Mosquito Bits quite often for my outdoor plants. Works great to kill the eggs and larvae. Recently some of those bugs found home in my orchid pots. I already put out sticky yellow pads but obviously it was a little too late. I saw some small ones coming out now.

I wonder if anyone had any experience with that for orchids especially cattleyas and phals? my phals are in moss and cattleyas are in bark mix.

https://www.amazon.com/SUMMIT-CHEMIC...80&sr=8-2&th=1

[Dimples]

I haven't tried it with orchids, but we use mosquito dunks and bits with regular potting soil.

We've tried mixing the mosquito bits into the soil, putting a layer of the bits on the soil surface, and putting a mosquito dunk in the watering can overnight before watering. So long as we're consistent with using them until the gnats are gone and have been gone for a few weeks, it works.

The gnats come back if we stop using the dunks/bits and let the mix stay too wet. Thankfully it's only an occasional issue.

[estación seca]

Train a fan on your plants. The adults emerge, but aren't strong enough to fly back against the wind to lay eggs. They're gone in 1 generation.

[Ray]

Mosquito Dunks and Bits contain Bacillus thuringiensis v. Israelensis, which is effective against fungus gnats, as it infects the eggs and larvae.

A Dunk or couple of teaspoons of Bits can be added to a gallon of non-chlorinated water, let stand for a few days, then used to water the plants.

[lobotomizedgoat]

I have used it some on orchids but very sparingly. I found that when the bits are added to the top of moist soils (not the recommended usage, of course) they would grow mold quite readily. Between not wanting to foster unwanted fungal growths and being skeptical of just what ends up dissolved in the final solution I figured caution was warranted. That said, the epidendrum and cattleya whose bark I used it on are fine. I also treat the soil of my vanilla with it from time to time.

It's probably worth noting that I mix it ~1.5 -2x stronger than recommended and keep it in a wash bottle for light application after my usual watering. For plants in soil this seems to work just as well as watering with only the normal solution.