I moved house to a new area a month ago and my two outdoor cats have been inside. The cat flap is being installed this week but I am feeling really anxious about letting them out.. This is because there are so many cats here! I've seen about 5 different cats in our new garden, all looking very happy and at home. I'm really worried about what will happen when I let my two out, I don't want them to get into fights. Is there anything I can do to help this? I have started putting their litter in the beds and pots around the garden to get their scent around. Thank you!