The cedars forming the hedge in our backyard were getting overgrown, so we called in these guys to trim them a bit. When they were first done, it was actually kind of unsightly, since we could see the area of the trunk that they had cut through, but now that the smaller branches have grown over that, it looks fine. However, our neighbour on the other side tried to do it himself, and it didn't turn out anywhere near as well. Sometimes you just need to have professionals do the job.