I Clik'ed my girls about 8 weeks ago and thought that would be it, but today I saw several greenbottles landing on them. I looked through their fleece but couldn't see any eggs. I know Clik is supposed to last 16 weeks, but I do groom my sheep on a daily basis and we've had some very heavy rain. I'm wondering about the effectiveness of Clik given these circumstances. I'm going away at the weekend and don't want anything 'nasty' to happen, as it's given a good forecast. So I wondered if I should Clik or Crovect them again tomorrow to be on the safe side? Would it do any harm if I did them again? And which would be best given the circumstances? Thank you for any advice.