We have purchased self watering containers. Last year we had no problems. This year we've developed a problem with mosquitoes getting into the water reservoir. Went to fill the reservoir the other day and hundreds of the little boogers came flying out. Seems like to me if we use something to get rid of the mosquitoes it would be absorbed by our veggie plants. Would rosemary or mint get rid of them or anyone have any other suggestions?...Help!