Correction on use of Avid. By saying to use it one week, one week, two weeks, I meant to convey spray once in one week, wait a week, spray once again and then wait 2 weeks and spray once again, then quit spraying. Might have sounded like I meant to spray AVID every day for a week. Michele is right about the reason for the additional sprayings with AVID. It only kills adult spider mites, so what you are killing with the additional sprayings are any hatchlings that come out after the initial spray. The warmer the weather the quicker the hatch rate, so you could conceivably spray once again in say 4 or 5 days instead of waiting 7 days after the initial spray. Just depends. Also note that it should not be combined with any other spray material (spreader sticker is alright)....I hope no one gets eaten by giant snails -lol.....Maryl