I have one cat, who is eight years old. He has never lived with another pet. Lately two cats have started coming on to our patio and right up close to the house and sitting by the cat flap and sitting on the windowsills.
My cat gets extremely upset by the close proximity of these two random cats. I'm talking about earsplitting screeching at two and three in the morning and waking up the whole household.
My cat is no longer happy and relaxed as he used to be, he seems totally stressed out and he spends hours and hours just sitting at the window or cat flap staring outside, terrified, constantly on the lookout for these other cats.
My question is how can I stop these two random cats from coming near my house, without doing anything that will put my own cat off his home?