Sometimes,sadly,if they are not neuteredsoon enough,they can,get,into the habit,of spraying,to mark,that that,is thier turf.And if he,was in a home,with a lot,of Toms,then territory,would be very,very important,to him.Have you tried Feliway.Sam,was spraying,and it helped,a lot,and Sam,is going,on 10.