Call Us For A FREE Estimate. There are many reasons why ATS has built a large and loyal following of customers who call us and reccommend us to their friends, family and neighbors - year after year. ATS was founded because Dave Rohde and Ryan Strache felt residents of Metro Atlanta deserved a higher-quality, more experienced, yet more affordable tree care company. At ATS, our philosophy is that there should be a more holistic and comprehensive approach to tree care. As we see it, pruning and removal should be done for a good reason, as determined by a qualified diagnosis. We also believe in great customer service and a commitment to unconditional customer satisfaction.