So far, so good. Just had the service performed yesterday so time will tell if it was effective. Joseph was pleasant and accommodating and if everything works as he explained, we should be happy customers. The only “gotcha” was that we had heard via another customer that the non-chemical that you use now has clove oil rather than rosemary, but Joseph was unaware of this. He made a couple of calls and verified that this formulation change had indeed been made and it had not been communicated to him. So communication with the field techs could apparently be improved. Otherwise, happy so far.