I found flies in my orchid bark!

[AdeleDS]

I don't know about sundew, but pinguicula are super-easy to propagate - I bought 1 about a year ago and now I have 6, and I wasn't even trying to propagate; I just gave any leaves that fell off a place to root.

[isurus79]

I've got a ping on my windowsill that is feasting on fungus gnats right now! The gnats seem to be seasonal (at least here in Texas), so repotting likely wouldn't get rid of the gnats but would stress your plant. I'll also vouch for Carnivero as a great source of carnivorous plants. The nursery is just down the road from my house and Drew (owner) is incredibly passionate about carnivorous plants and has such an amazing collection. Sundews should work as well as pings at controlling the gnats.

[Steve83]

Drosera spatulata is an easy one that self fertilizes, and can flower multiple times a year with decent conditions. You will be giving clones away.

The biggest hassle is the requirement for rainwater / RO water.

[PuiPuiMolcar]

my to go advice for carnivorous is
easier carni for hardy zone like 8-11
cape sundew, butterwort, and Nepenthes natrata

Cape is the to go for beginner for me, they grow like weed and they will decimate your fungus gnat the fastest. You'll probably have like 1000 of them by next year just from one cape.
The only downside is that the cheapest cape tend to only eat smaller insects.

Butterwort, same as cape, grow like weed, eat like there's no tomorrow. The biggest downside is that if you winter is cold enough induce them into dormancy, it sucks.

Nep natrata, harder of the easy carnivorous. grow fast if well cared, can also eat bigger prey but not enough to help you probably.
I'll just Just get three for fun, they're pretty inexpensive.

[lindasbabies]

So if using a fan, how long do I have to leave the fan on the orchids? I’ve had a fan on my orchids for almost a week now.

[estación seca]

Look up the generation time for fungus gnats. I'd leave them on for about 5 days after that. There is always a fan blowing across my orchids in my sunroom so I can't give you the number of days.

[RoseSD]

Originally Posted by PuiPuiMolcar

most likely fungus gnat, I grow orchid outdoors so fungus gnat is always a thing but they dont pose much threat if they are low in number.
My I tried using mosquito dunk solution and water with orchid with it to kill the larvea, and use the sticky yellow trap to control the adult. Carnivorous plant are the other best way to control the adults, however if you way want to invest is several, one is not enough to get rid of em.

Is mosquito dunk safe for all types of orchids?

[Dimples]

Mosquito dunks are only unsafe for a few organisms (mosquitoes, dragonfly nymphs (?), etc.). The active ingredient, Bt, is benign to everything else.