Anyone suggest internal or external remedies for grass mites. A friend has a very itchy dog and she has ruled out all other possible causes and tested the lawn for mites, so is convinced that is what it is, but doesn’t want him to have to keep having cortisone cream to control itching. I’m assuming German chamomile, lemongrass, lavender and neem or olive oil as a carrier? Would love to hear from anyone who has actually had this problem and successfully dealt with it. Thanks.