3. Liquid potpourri
Filling your house with the smell of pine or peppermint may seem inviting, but if you're partial to heating your scented oils in a simmer pot, know that it can cause serious harm to your feline.
These oils are toxic to cats, and even a few licks can result in severe chemical burns in the mouth, fever, difficulty breathing, and tremors. Dogs aren't as sensitive, but it's still wise to scent your home with a nontoxic candle kept safely out of pets' reach.