I have been using Noble for three years now. Every year I need my olive tree sprayed and I always forget to do it ! (It has to be done only during a certain time) I found these guys (Bob) after one year I paid some other company after they told me they sprayed my tree (however I think they got paid and did NOT spray - my tree bloomed and yuck!). Bob calls me once a year to schedule a spraying.. he does it and I don't even have to be home!! Easy peesy!!! I thrust him completely . I don't have to wonder if it was done.