Collar Round

How can I stop this little cat coming round?

I have 2 oldish cats and recently a kitten, about 9 months old has started coming to the house. As yet, I haven't fed it but it is getting that it is here all the time and I don't want to get attached to it..as I write this it is crying at my back door, I don't want it to starve, I know feeding it isn't going to make it go home, it has a collar on so must live local...WHAT CAN I DO?

U have to be cruel to be kind. If it looks healthy and is wearing a collar u have to ignore it. Imagine how u would feel if someone was feeding ur cats? If it looks underfed maybe it would be best if u tried to find out where it was from and talk to the owners. I had a cat that kept coming to me it was only 1 year old it looked skinny and ill. I located the owners that did not care so i started feeding it. That was a year ago and still feeding it now it looks healthy and alot happier and thankfully does not see its old owners anymore they just did not care.