Mosquito Magnet Suggestions

I used Spartan Mosquito last year and it really worked great. Just put up the first batch of them for this year a couple of weeks ago. Now it did NOTHING against the noseeum gnats last year. But best I have ever used for skeeters.

We have more issues with gnats than mosquitoes. I used the Spartan mosquito last year. Can you just buy the chemical instead of everything again?