Using vinegar as a deterrent to prevent bunnies from chewing is generally not recommended. Vinegar has a strong odor that may be off-putting for the bunny, but it also carries some potential risks. If ingested, vinegar can cause stomach and digestive upset in rabbits, so spraying or applying it directly on items you don't want your rabbit to chew is not safe. Additionally, chemicals found in white distilled vinegar can damage furniture and surfaces if applied too liberally or left on too long. The best way to keep your bunny from chewing on something they shouldn't is to provide them with plenty of safe alternatives like hay cubes, wood toys and edible chews specifically made for rabbits.