Last year, I tried many different dry erase surfaces, including dry erase paint and many alternative treatments of showerboard. I even tried dry erase paint buffed onto a showerboard panel. Surprisingly, this was worse than the melanine alone.

After a couple weeks of testing, my conclusion was that plain showerboard and a Mr Clean dry erase pad for an eraser was the best solution for a ghost free, cost-effective dry erase board.

Perhaps the dry erase pad will eventually wear down the showerboard, but it hasn't so far, and they're super cheap to replace.