Gentlemen, thanks, I have removed the engine cal couple time and used compressed air to blow it clean as recommended. I just wanted to make sure that was sufficient. I do like the idea of the long round brush and don't see that causing a problem. Last thing I would be inclinde to do is to flush the engine with water.
My storage building is very tight and I keep rodent traps loaded all the time as a back up. Never have I had problem them in the building, they did do terrible number on my daughter car several years back while it sat under the car cover, Cheer All, Ray