Had 3 trees trimmed. One tree in particular might have been 25 feet before the trimming. Owner actually had mountain climbing clips and climbed the core of the tree do do a lot of the work. He also had 3 helpers with extension pole cutters. They brought a wood grinder to dispose of the wood. He was careful to not take off too much off the trees (~30% at once, depending on the tree's health). He was able to take a lot off. I am completely happy. They did the job quickly in <2h if I recall. He was quite knowledgeable and let us know about a bug infestation on one tree which we can fix with a spray. He came soon, within a few weeks of when we booked it. Price was much less than another well-rated company we originally booked - we were on the other company's waiting list for 1.5 years.