Cat has been scratching his ear more than usual and today I notice it looks sore at the bottom of one, as if he's scratched it sore.
Ear mites seems a likely culprit but he's on Advocate spot on? Isn't that supposed to work against them too? He is a very very floofy cat (a Siberian) and we have had our suspicions for a while that spot on might not be getting through the floof. Fleas seem quite persistent on a low level despite regular application 
Any thoughts or advice very welcome?