Do you have kittens or a new rescue cat that you want to let outside?
Make sure your cat is neutered before going outside.
Slowly introduce them to the garden with supervised visits before meal times so they will readily come back.
Use a microchip cat flap so only your cat can come into your house.
Make sure you train them to come in and out the flap using food treats.
Use pheromone therapy in the home to make them feel settled inside.
Place food bowls away from external doors or busy areas.