Hi! I have an 18 month old Dominique who I discovered had lice/mites. Upon further inspection, I noticed a tiny red critter coming out of her ear which also had a "scab" near it. I treated her with poultry dust and then put a few drops of vegetable oil into her ear to smother the critters. Within a few days, her ear, neck, & wattles are swollen and still are. She is eating FF like a little piglet, alert, & her poops look ok. BIG QUESTION: Could the vegetable oil have caused an ear infection? I gave her tetracycline for 5 days with little to no improvement and now I'm giving her 1/2 cc Tylan 200 orally and 1/2 cc penicillin injected.