Basically, as mosquito mesh is much lighter than the denser no-see-um mesh, I'm wondering if it's safe to get away with just using the former for a bug net. I don't know if no-see-ums are found in my area or not - wikipedia says they live in just about any aquatic habitat - but basically most of my backpacking and camping is going to be within a few hours drive of Philadelphia for the next few years and I'm wondering if I can shave a few ounces from a DIY bug net by using just mosquito netting and still be safe from bugs.

Alternately, could simple mosquito mesh be treated with permethrin to keep out just about anything?