just habenero hot sauce from grocery store, like 50ml and 300ml water (any more and you'll burn up some leaves like me, till I got that mix right) really just on the soil and big fan leaves, (they hatch from the soil at first) so at least you'll eliminate any new ones, the ones that make it to adulthood will fly around and hit your lights <ZAPO!> the adults die off quick if you got lots of air movement blowing them around.