I am surprised you still have deer that regular and that many. I know you have at least two dogs. Ever since HK arrived the frequency and number have decreased drastically. She will sense them back in the trees behind the house, or across the street. Then she is off. She only chases a 100 yards maybe before returning. She needs to keep those evil big dogs away. Its her job. I like having them around, but the neighbors like that HK has reduced the visits. They eat there plantings because they planted the wrong stuff.