Need help for my itchy cat

My cat's ear is really freaking itchy. She doesn't mess with it all the time, but when she does she'll clean and scratch it quite a lot and sometimes shake her head. I suspect a yeast infection but I can't afford to take her to the vet at the moment. I think its bugging her doubly so because she had ear mites in the past and she's got scars from it. I don't think the mites have returned though cause I used a little cotton swab to check her out and it came back clean, no black stuff at all. I could be wrong though, I'm certainly no vet. Are there any home remedies to help her out? Or at least something to ease the itching until I can get her proper treatment? Or is she just gonna have to wait out until i can get her to the vet?

Hmm... if you can't find any debris, it's most likely not mites. They do sell ear cleaning drops/solution at pet shops, so you can always give cleaning her ears a shot. If it's an infection of some kind, like you said, she'll need to see a vet to get some real relief.

Hope your cat feels better soon! Nothing more annoying than an itchy ear!