My teeth are in good health and I take good care of them, yet I always get this plaque buildup no matter what I try.
I've tried different brushes, toothpastes, and flossing methods to no avail. Mouthwash is too harsh on my mouth and peels my skin off so I avoid that.
I haven't tried waterpicks or electric brushes yet. Did you? Did they work for you? Have you succeeded in preventing plaque and if so, how???
Not yet, that might be something to ask next time I go to the dentist. Admittedly I didn't search exhaustively, I gave up seeing every mouthwash in australian supermarkets have it.
Look at the sensitive ones, often the cheaper ones don't have SLS in them. They're better but with some I still get issues if I don't rinse at all. For reference, Aldi sells one around here without SLS and with fluoride.