A Small World Tree Company has been working on the property for five years. We have a giant, very old tree--one of the oldest in San Francisco (maybe 300 years old), and he's removed ivy built up and really cleans everything out. He'll even climb to the top to clean it out. I would say he has one of the toughest jobs to have and I'm very happy and satisfied. He's very personable, I like talking with them, watching them work, and, most importantly, I trust them.