DD aged 9 announced an itchy bottom tonight and lo and behold she has threadworms again. It's only a couple of months since I did us all with Ovex. I now face a weekend of hot bedding washes, damp dusting and dosing us all up. I do keep their nails short, try and encourage regular handwashing (but not always succesfully, I suspect). I am now going to become a handwashing nazi. Ovex is not cheap either but I will have to do us all again now. Very annoying. Just wanted to rant really!!