https://www.animeddirect.co.uk/surolan-ear-drops-15ml.html?gclid=Cj0
KCQiAjszhBRDgARIsAH8Kgvf_mXMZm90R3BxN9sC9CvPc_PmxZZlCXX5daZPwpfmaZJhdpEQ4YbYaAuVeEALw_wcB
This is what my vet recommends, it is a broad spectrum preparation that is extremely effective against parasite and fungal infection, . If it is fungle as it sounds to be then as far as l am concerned there is no better treatment, 1 dab on the affected area /s and within a few days the affected area is clear of any infection, and it never returns! The only downside is that you need your vet to rite you a script! Also after opening it is recommended to use within 28 days!
I have a bottle that has been open for well over a year and it is still as effective