Just put a spot on on the girls to complete their worming, and Zi is acting a bit odd - not enough for me to rush her to the vets, but enough to be a tad concerned and watch her (scratching, walking funny and walking rather hyper as though she was trying to get rid of something) - I debated going washing her, as she was really fussing, but then she curled up, and is now sleeping. Hopefully it is all fine now - Molly had no reaction and it is well within date. if she wakes up and is still acting odd I will ring the vets and see how long to monitor her for. They had one on Tues and didn't act like this, but I dont often use spot on wormers, not sure if she will have had this one before.