Leaf miners. More of a cosmetic issue than anything else.

I pick of the leaves that look like that and put them in the trash can.

If you check enuff leaves you may find the leaf miner still inside one. Check the backs of the leaves for tiny specs (eggs). You can remove the eggs with duct tape or any wide tape wrapped around your hand so the sticky side is out - like fly paper - press to the eggs to remove them.

As mentioned snip and remove the leaves that are heavily damaged. I like to bag the leaves before tossing. The idea is to break the lifecycle of the insect to eliminate/minimize damage. IF you can burning the removed leaves is helpful the make sure the cycle is broken.

Also put up some sticky traps to catch the adult leaf miners. http://www.amazon.com/KINGLAKE%C2%AE-15x20cm-Yellow-Sticky-Aphids/dp/B00WQRC8YG/ref=sr_1_6?ie=UTF8&qid=1439785097&sr=8-6&keywords=fly+trap+sticky

Personally I avoid anything that will attract unwanted insects (esp from the neighbors yard). Even beer traps for slugs I feel will attract what is not yet a problem.

I remember during the 70s/80s using those "bug lights" to attract unwanted insects from the whole neighborhood. Maybe IF everyone has and uses one but not IF you are the only light on the block.

And IF you insist on using an attractant place it away from what you are trying to protect.