toothbrush sterilizer

I used to just put my toothbrush in a holder or leave it on the sink after brushing, but I heard that is a really bad habit. I was told that if you do that, bacteria multiply on the toothbrush, and even if you brush, bad bacteria can infect your mouth, potentially causing gum inflammation or worsening bad breath. So I started using this, though I haven't been using it for that long. I think it's really great because it helps keep the toothbrush clean. However, if there is one downside, it would be having a lid to cover the front.