The large tabby can sometimes try to run out, he usually goes and hides under the deck by the pond. The little white/gray one probably won't come out from hiding while you're there. Do not let the white/gray one get out under any circumstances, she does not know the area at all. I recommend knocking first, then opening the door one inch and calling into the apartment so that they are more likely to hide. Bring a towel or bag to hold in front of you as you enter so they are less likely to escape.
2 Pets: 2 cats