I have labs..One always has ear problems..I agree with the allergy comments...Consider changing...I use science diet brand..Also the best treatment came from our vet..Mix equal parts white vinegar and alcohol...You can swab the ears or after bath time or swimming, lift the ear flap and pour it in the ears...He will sling most of it out...But what stays will work ...The alcohol dries and the vinegar maintains the ph in the ears...
the foot fungus meds work too..They are more drying than the women yeast products...The drying effect is what you want.....
If you flush the ears with the solution, please do it outside.......
Hope this helps....