Just a few ?s about gutter vacs. How high can they reach? how powerful r they ie do they suck up hard compacted soil and plants? i did a commercial gutter clean and sat on the roof to clear them out by hand there was beer bottles and gas canisters in there i could c that bein a problem? also for a average 2 gutter 2 storey warehouse roughly how much to charge? would much appreciate any feed back! best regards.