Today I have by accident thrown a AAA battery into a bucket of water. I fished it out of the water immediately (within 20 seconds or so) and nothing notable had happened and the battery is still full according to a battery test device.
Cats Scratching Ears with Parasites. If this is not the issue, then it may be related to parasites alone. Check your cat's ears for signs of ticks, fleas, and mites. These parasites can cause obsessive scratching, as the cat makes a desperate effort to relieve pain and discomfort. If your cat is not allergic, try using natural tick or flea repellents (or mite repellent) if that seems to be the issue.
Cats dig at their ears when their ears itch. Head shaking is another sign of itchy ears. Any time a cat really digs into her ears, I become concerned about the risk of an ear infection, ear mites, or a foreign object (such as a foxtail) in the ear. If your vet has checked the ears recently and given them a clean bill of health, then these issues shouldnât be playing a role in the scratching and shaking.