Can i use the SNS-217 .Look the plants over daily and just seen webing on the top leaves on a couple of leaves,theres probally more.My plants are real bushy.I have 12 plants If i hit them 2 times and dont get every 1of the mites ,am i fighting a loosing battle?Are they going to hide in my buds?What happens at harvest if i still have them?Thank you for any advice!