That is SO wonderful you're doing this for these cats. There are some guidelines they suggest to follow when relocating a cat/feral that will be outdoors. Good luck and please let us know how it all works out.

For specific instructions on how to safely relocate feral cats, check out Alley Cat Allies' fact sheet entitled "Relocation - Guidelines for Safe Relocation of Feral Cats," available on their website on the Info Center page (www.alleycat.org). The fact sheet covers every aspect of the process and should be carefully read and followed, especially the recommended confinement period in the new territory of 2 to 3 weeks. Many people mistakenly believe they can simply let a cat go in a new area and it will be ok. In fact, the cat needs to be trained (through confinement) that its food source has changed, or else she is liable to run off in search of her old territory, never to be seen again.

Confinement period
1. Cats need to be confined initially in their new home for at least two to three weeks in order to familiarize the cats with their new environment, sothat they will remain on the premises. Even though there are instances of cats remaining when they have escaped upon arrival, this is rare and most cats will take off, never to be seen again.

2. Other than being dangerous for the cat, this can be traumatic for the rescuer who has usually put a lot of time, energy, money, and care into the rescue.

3. Some people see confinement as cruel, but a short confinement period is a very necessary part of the relocation project.

4. Not confining the cats and having them run off could mean a far worse fate for the cats. You should warn the new caretaker that during the first day or two, the cats may struggle to find a way out. Most cats settle down in the cage after a day or two when they realize that no harm will befall them.