You have already had some great advice, and contacting the local vets and shelters re low-cost operations is a great way to go.

A while ago I put together some info on behalf of our local shelter, for the local newspaper, as we have loads of people feeding compound (or stray) cats, but not enough of them are TNRĂ_ng. Good luck with getting your cats "fixed"

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The harsh reality is that these animals are "hunters" and by providing an easy food source we are causing them to lose their hunting and scavenging abilities. What will become of these animals when their reliable food source disappears? They will not know how to fend for themselves. In addition, nature minimizes overpopulation by a process of natural selection - "survival of the fittest". In nature only strong animals will successfully mate, and produce litters. Weak, sick or malnourished animals will typically not produce large, viable litters. However when we remove natures "birth control", and provide food, we are creating an environment where healthy animals are breeding and producing large healthy litters. This needs to be controlled in some way.

A very humane way of handling this problem is by a process caller TNR (Trap, Neuter, Release). An animal is trapped in a humane trap, is spayed or neutered, and after a short recovery period is released back into the same area. Over a period of time, if all animals in an area have been TNR'ed, the population will decrease to a manageable level.

SO WHAT CAN YOU DO??? If you are already feeding cats in your compound, please consider taking this care one step further, by embarking on a TNR program!

(The rest of the article was info specific to our situation in bahrain, but I'm sure you get the idea. It's WONDERFUL what you are doing by feeding and sheltering them, but it will get totally unmanagable if the numbers of cats are not controlled.