That’s true. There are what we call carnal christians, those who may attend church but not really believe in Jesus as their Lord and Saviour. When Catholics put their faith and trust in Jesus as Lord and Saviour, they are saved.
I would qualify this statement by saying "When Catholics put their faith and trust ONLY in Jesus as Lord and Savior, they are saved, they become saints:). Any works they do, they do because they are saved, not to earn salvation or to keep their salvation.
Here's the tough part what exactly do they need to have Faith in. Is it the good works they do in his name? Is it the consistency of their religious practices?