For future reference the best remedy we have found for ear mites is TRESADERM which can be obtained from your Vet. The best remedy for a Yeast Infection in the ear is CONOFITE, also available at the Vet's office. Maltese with very tiny ear passages often are likely to develop Yeast Infections and keeping the ear passges free and clear of hair is a real "must". Ear mites are not an uncommon problem but they can be a real challenge to get rid of completely as they are very quickly and easily passed between dogs. Sometimes you must almost treat all of your dogs at once otherwise you'll just chase the mites from dog to dog.
Good luck - but that trip to the Vet should not be put off.
Larry Stanberry - Divine Maltese