Have just bought a new baby kitten into the family. Baby is 12 weeks old and tiny but feisty. Introduced to 2 year old cat. Had put Pet Remedy on half hour before kitten came. After initial sniffing and chasing all is peace and quiet. ” year old dopey and kitten calm. They chase around but NO aggression. Do buy this it so works! Wiped cage bars as older cat going for jabs. Normally crying and hiding at the back, but this time nothing, just sat there. SUPER PRODUCT!