i skip all the worries about bugs by not starching until i'm ready to use it. i divide my fabs into fat Qs or fat halves, depending on the project. they're easier to work with at the cutting board and not much bother to iron. (of course, i've also made an "ironing board cover" that fits over my kitchen table, so it's even easier.)
all the methods described so far are great. i've tried a few.
my personal preference is to pour a 50/50 mix of liquid starch/water into a recycled spray bottle. since different fabs require different amounts of starch to get stiff, i know i won't over or under starch. then i use my iron, cranked up to the highest setting. it's faster, and i'm not very patient. :lol: