This is a very common question we get asked, which is a very fair question to ask. Its simple really; firstly there is good physical feedback we get from the gutter poles, we can although the gutters may be 6 metres above us, we can feel if there is something in the gutter line knowing if its still blocked. We can also do a trick where we place the end of the gutter nozzle into the top of the downpipe and listen at the base of the downpipe, if we can hear the wind rushing up we know it is clear. Lastly, the fail-safe way we know whether the gutters are clear is with our high level inspection cameras that give us a live feed of the end of the gutter nozzle. We can also record with the same camera which can be useful to put minds at ease to concerned customers.