We have a huge population of feral cats here on Maui, just as elsewhere in the world. Domesticated cats have established themselves since left to breed. It is human error that we have so many, because they should have been fixed.
Rodent and insect population control has been a factor. There was a time when a cat was worth money for their ability to catch harbor rats.
It is a crime to trap a cat and "abandon" it. This means that if you trap a cat, it must be released where it was trapped or to the Maui Humane Society. There, the animal will be examined and hopefully be reunited with its owner.
The trapping method must have cruelty safeguards: no bodily harm, starvation or exposure to sun/rain.
Cruelty to animals and this trapping rule pertain to all animals--not just pets.