I'm just getting back into the hobby and it still makes me laugh when I see smeared bugs on the blades. The VERY first time I saw it I remember laughing and saying, "well, that makes sense."
In my experience, all the amount of research and learning, no one ever mentioned bugs on the main blades and grass/dirt on the tail blades.
So, just for fun, how often do you guys clean your blades?
Any other unspoken anomalies that come specific to helis?