As a side note I was completely disgusted to find my black light was illuminating "stains" on the sheets despite having never been used and coming from right out of the bag! I bought these at K-Mart and am hoping that's just a symptom of factory chemicals.
Insects showed up best on the whiter ones so I mostly used those.
So those were the highlights of one year of doing this. I had it set up more than 6 times over the summer, always a day or two after it had just rained. Considering the high humidity I should have gotten more. And that's why this is a failure at Entomology. So at some point this year I'll hopefully buy a better light and have more to report back with.