Review on FELIWAY Optimum Enhanced Pheromone Diffuser Cats by Carmen White

I upgraded Feliway to the optimal version and hooked it up on October 13th. It is empty until October 29th. That's 16 days. I used it with a new infuser. At that rate, running one of them in a month would require 2 top-ups and cost $50 per month since each top-up costs $25. I use two units which for that price or $100 require four refills per month. Wow. The original version of Feliway was usually valid for 30 days, so that's a big difference! The product really helps my cat choose the right litter box and she is out more - instead of hiding all the time as she is a tardigrade cat. . So I think it works, even if it's expensive.