"Just Asking" wrote in message
...
I have a few questions:

1) Can you kill fungus gnat larvae by drenching the soil with a pyrethrum
based solution?

2) Can you kill fungus gnat larvae with hydrogen peroxide (h2o2)? Will
this kill the plants? If not,
what is the best strength?

If the gnats are a problem on houseplants, you can smother them by covering
the potting soil with one-half inch of sand.