Has anyone ever tried using an airless sprayer to apply degreaser on gutters? I have a Graco 5900 hard mounted on a trailer with about 200 foot of hose on a hose reel. I have about 15 foot of extensions for the airless sprayer. I am tired of brushing on the gutter cleaner and dripping it everywhere. My biggest concern is what will the degreaser due to the internals of my pump and the packings inside. I am not sure if the alkaline would damage the stainless steel internals of the pump. Any help would be appreciated. Thanks Tom