Parents also need to check their own expectations. But don't expect them to vacuum the carpet. If the worst thing your teen-ager does is wear funky clothes and die his hair purple, consider yourself lucky. Be crystal clear on your expectations. You have to spell out exactly what you want.
Children dedicate their lives to outsmarting their parents.
The key is to switch techniques before the current one becomes ineffective. If the usual consequence of not getting a job done on time is no TV for a night, then try changing the consequence to no bicycling for a day.