As a long time cat owner (65 years of reasonably peaceful cat co-habiting) the absolute only correct response is a firm " Get off the bed, SCAT!". You give them an inch and they take over the house.
As a long time cat owner (65 years of reasonably peaceful cat co-habiting) the absolute only correct response is a firm " Get off the bed, SCAT!". You give them an inch and they take over the house.