10 Best Relaxers For Cats 2025 in the United States

FELIWAY Optimum is a pheromone-based relaxer designed to reduce stress-related behaviors in cats such as scratching, urine spraying, conflicts, and excessive hiding. The active ingredient is a patented pheromone that mimics natural cat pheromones, helping to calm cats without using drugs or sedation. This product is easy to use—simply plug the diffuser into an outlet—and provides continuous calming effects for up to 30 days.

The diffuser is safe for humans and other pets, although it must be used correctly to be effective. It’s essential to use the FELIWAY Optimum refills exclusively with the FELIWAY diffuser and place it in areas where the cat spends the most time, avoiding locations like near litterboxes or behind curtains. The product covers up to 700 square feet, making it suitable for larger rooms, but may require additional diffusers for extensive areas.

It’s crucial to note that the diffuser’s effectiveness can be impacted by its placement. This product is backed by extensive scientific research and years of feline stress expertise, making it a reliable option for cat owners dealing with stressed or anxious pets.

The FELIWAY MultiCat Calming Pheromone is a drug-free relaxer designed for households with multiple cats experiencing tension. It uses pheromone analogs that mimic a mother cat's natural calming scent, which can help reduce conflicts such as fighting and chasing. One of its strong points is its ease of use; simply plug the diffuser into an outlet and it will work continuously for up to 30 days.

This is particularly helpful for busy pet owners who may not have time to administer daily treatments. The product is also safe for both humans and other pets, ensuring a worry-free environment. However, it's important to note that the effectiveness can vary, meaning it may not work for every cat. Additionally, the product requires you to use the specific FELIWAY diffuser and refills, which can add to the cost over time.

For maximum effectiveness, the diffuser should be replaced every 6 months and each vial every month. Supported by over 25 years of research, those looking for a one-size-fits-all solution might need to explore other options if their cats don't respond to pheromones.

The Comfort Zone 3 Pack MultiCat Diffuser Refills provide a drug-free way to help calm cats, especially useful in homes with multiple cats where tension and stress can arise. These refills work by releasing calming pheromones into the air for up to 30 days per refill, creating a peaceful environment that may reduce behaviors like spraying and scratching. Installation is straightforward—just plug the diffuser into a wall outlet in the room where your cats spend most time. It is safe to use around all life stages and other pets, with a built-in shut-off to prevent overheating.

Because the diffuser covers just one room, you may need more than one unit for larger or multiple-room spaces. While the refills are easy to replace monthly, the diffuser unit itself should be replaced yearly for best performance. This product suits cat owners looking for a non-medication option to ease anxiety and improve harmony among cats. However, it relies on electrical outlets and proper placement to be effective, which might limit flexibility in some homes.

This product is a reliable, vet-recommended solution that supports calmer, happier cats without drugs, but you should consider your home layout to ensure it meets your needs.