Gnats in the House

Does anyone else have gnats in the house? I don’t know what the deal is but suddenly we have an abundance of them and I don’t know what to do to get rid of them. At first I thought it was a fruitfly issue (found a way overripe orange in the fruit bowl), but after I threw that out, they remained. Is it seasonal?

I can’t drink a glass of wine without covering it up. Maybe I’ll use that as a trap.

I found this discussion in a quick google search, but am looking for something (hopefully) without using chemicals.

Any suggestions?