If your gums are delicate/already having issues then picks and damage them further.
With just the string dental floss, when you get good with it, you can get all sorts of angles, clear out all chunks in combination with water in the mouth hard suction rinsing, and scrape along the sides of teeth to clean them better.
I never flossed because the floss usually got caught and shredded on the edges of amalgam fillings. Interdental picks made of plastic, with ridges for lifting out crud, made life a lot easier.
