Lettuce/Spinach bug problems
Every year I have a problem with my lettuce, spinach and other mixed baby greens. I'm not sure what is eating them. I have slug and snail bait down, and have taken care of them. There are a lot of small little flies on the leaves. What happens is on the leaves, mainly the spinach, there are areas that the bugs have eaten, but not all the way through, they leave a clear but very thin area. Looks a lot like this, but nearly the whole leaf, so I'm guessing leafminers. http://www.umassvegetable.org/soil_crop_pest_mgt/insect_mgt/images/spinachleafminerinjury.jpg
Can I use garden vegetable dust or the garden safe brand fruit and vegetable spray (spray with Pyrethrins .01% and Canola Oil 1.00%)? Or is there something else I can use that will work better. I really hate to use theses but it seems there is no other option.