I am sure someone must have mentioned this before, but as I wasn't able to find double-edged razors handy I started using an Xacto knife to trim my bass bugs. It works great! Just as sharp, and easier to hold and handle than a razor blade I think. Plus, there are different shapes of blade for cutting different angles. And the replacement blades are pretty cheap.
Took me a few worn-out pairs of scissors before I thought of that so I just though I'd mention it in hopes it might save others some time and dull scissor blades as well.