You have to do it, for your health, regularly. You can’t let it build up; you have to be proactive. And leaving your site for too short of a time is like ripping off a piece of floss that is too short to do the job. Then it’s wasted and you have to rip off a whole new piece. Take as much as you need to do the job, but not more. Otherwise you’re wasting the floss and what am I, made of floss? No! I’m a volunteer. I can’t afford a whole bunch of floss.