Bugs are nasty this year.

That's kinda odd, I think I will try that.
We are at that time of year when the spotted wing flies start looking for a place to hibernate and got a butt load in my motor home, fly stickies don't seem to help so will try the hyd. oil idea.
The hyd fluid had about 200 hours on it the mower a JD x500 may be the fluid had a slight smell but it was not discolored or burnt it sure drawed them in