I also noticed my LED yard-lights DO NOT attract as many flying insects / which means less spiders.
I've heard people say this, but haven't noticed any less bugs and spiders around LEDs vs all the other styles I've had over the years (Merc vapor, metal hallide, CFL, etc..). The one on our garage I like to run dusk/dawn, but the spider web build up gets so bad under the soffet and on the garage exterior, I can't leave it on all night in the warmer months.