Well, if they are the same thing my dear Chloe has, I leave them alone unless they are in a spot where they get irritated or if they start to weep. Then, you can have them removed. The way it was explained to me is that if you lance them and don't remove the "sac", then the sac is apt to just refill again. By removing the sac, you remove the problem -- at that particular spot. No guarantee they won't get more elsewhere!