We adopted 2 older kittens 3 months ago. Both neutered, both been vet checked before we got them. One has had a vet check since because of a very minor injury. The vet would only prescribe flea treatment for the cat she has seen - she gave us 3 months worth so we treated both cats, but now they need re-treating and we've only one ampoule left. So we are faced with taking a perfectly healthy cat to the vet and paying for a consultation just so they can be prescribed flea treatment. Is there any alternative?