Call an exterminator?

For starters, put all your plants outside and remove any food that is sitting on counters. Then try figure out where the bugs are congregating. Are they around the drains?

I learned never to buy house plants from the grocery store. They were always infested with fruit flies, and the soil was infested with eggs galore. I learned to buy at the plant nurseries or other stores such as Home Depot and had no problem, but never grocery stores.

A few years ago I thought I was dealing with fruit flies, but the typical fruit fly traps weren’t doing any good, it was like they weren’t attracted to them. After a long battle I discovered I was dealing with fungus gnats from a houseplant that had been limping along in poor health. I got rid of the houseplant and the problem was solved! But before the ordeal was solved my exterminator also told me that I should plug up all my drains unless I was using it at that moment... it was a hassle for awhile, but he said tiny bugs like that often like to breed in the sink drains. I only plugged up the sink drains while the problem existed, it’s not a habit I kept up, but it would be the first thing I do if I ever get a fruit fly or gnat problem again!

Maylea, are you still here? Fruit flies, drain flies, fungus gnats in house plants are all treated differently. If these are breeding and living in your house plants (soil) they are fungus gnats. What you need to do is use some safe for indoor application that won't hurt you, your plants, your pets.

Bacillus thuringiensis subspecies Israelensis (BTi) is harmful only to mosquito and gnat larvae, nothing else. It's a naturally occurring bacterium, the same one as used in Mosquito Bits for bird baths, ponds and lakes. The adults don't live long enough to bother with, what you want to do is break the breeding cycle by killing the larvae in your houseplant soil. It's not an overnight fix. You need to mix with water and use that water to water all your houseplants on their regular schedule. At least three consecutive watering times. If you water once weekly, getting rid of all the little fly guys is going to take three weeks. Be patient, it works. Lots of us who grow from seed have dealt with the gnats and the BTi really works and works safely. If you can find it another form, that's fine. I don't know whats available right now but there used to be a few, Gnatrol, Knock Out Gnats but all with the same active BTi ingredient. The subspecies (israelensis) is important/critical. Other BT including the one for caterpillars in the garden won't work for this - it is insect specific.

14 grams Gnatrol BTi which makes up to 15 gallons mixed in water will be plenty for the $7.95 you'll spend...Gnatrol (BTi) for fungus gnats