Central Life Sciences presents the Comfort Zone with Feliway Refill 2-pack. Formulated to mimic a feline facial pheromone that reassures cats that they're safe in their surroundings, the product now comes with a two-pack of refills for its diffuser form. Great for use in multiple rooms in the home, the refills each last up to 30 days and cover an area of approximately 650 sq. ft., the manufacturer states. The company's entire line of Comfort Zone products also features a new eye-catching design that easily educates consumers about each product's effectiveness and how to use it, the company adds. New packaging for the items uses 55 percent less plastic, has more premium-looking graphics and comes with money-saving coupons, the company reports. Along with the Refill 2-pack, Comfort Zone with Feliway products for cats and Comfort Zone with D.A.P. for dogs are available in diffuser, single refill and spray forms.