Answer: Here is one online source for Gnatrol - I'm sure there are others:
Before buying though, you might try temporarily covering the soil with plastic wrap or aluminum foil. This is an effective barrier and once you've eliminated the current population of fungus gnats, your plants (and home) should be fungus gnat free. You run the risk of reintroducing the pests each time you bring home a new plant so be sure to cover the soil surface of any new plants for 2-3 weeks just to make sure there are no hitchhikers. Best wishes with your indoor garden!
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