Nature offers surprising home remedies for repelling flea and tick. Rosemary can be a potent herbal rinse, apple cider vinegar can be a spray, neem oil can be diluted and applied to fur, cedarwood can be used on collars or bedding, and lavender can be infused in oil for a fragrant spray. These remedies can help keep pets flea and tick-free, but it's essential to consult with a veterinarian first.