Yesterday I had quite an experience with Gnats and my orange landing pad. I wasn't crazy about my MA2 sucking them in thru the intake, so I changed takeoff positions 4 times before I could take off. The really strange thing is the way they seemed to be using my landing pad as a home base, because each time they formed a vertical tornado from the pad up and the reforming was immediate. Has anyone else experienced this? They were determine to say the least.