Groundhog does have a point. Guttervacs are great but you really need a generator to power them which weighs a ton, a selection of poles that can also weigh a fair bit, the camera set up, the gutter spike, the vac itself. If you are sucking wet sludge then the poles get lined with it and weigh even more, the hose clogs and gets heavy. It would often be much easier to climb a ladder and shove the crud along with a pole and scoop. Mind you I'd choose my vac any day for a three storey job.
