Do I need fuel injectors flushed every 12,000 miles?

Well there are times. When they become clogged, many miles down the road, i have saved them with a can of pressurised cleaner but if the filter is changed every now and then with a good Techron additive,, then that is not necessary. They just selling this service to anyone that will buy it. And many people do! Probably what's wrong with the car now!