I'm not clear if this is a legitimate question but….if so, it depends. In our city you can take them to Home Depot/Lowes for disposal. They should not be thrown out with garbage.
The amounts is absolutely minimal and mostly "harmles" even if accidents were to happen. To my knowledge they don't contain actual liquid mercury but only the vapours. If you break them by accident just ventilate the room well and you'll be fine. Not to say it's healthy, mercury is a serious matter and should be disposed of correctly. But no reason to be overly concerned if you break one by accident.
All fluorescent lights contain mercury, they can't be made without it. These CFL bulbs contain significantly less mercury than the large fluorescent tubes though.