I was free to pass in a veterinarian-home visit, an electrical distributor, including 1 bottle because my elderly mother cat is very jealous and sometimes very irritated. The distributor is sufficient for a 80 sqm apartment and relatively economical, 1 Nachfüllflakon extends approximately 1 month or more. A guilty pleasure, but still better than constant quarrels with hissing, growling and claws blows or urine puddles my jealous cat. All can also leave Feliway not, but it makes my cat but much quieter.