The Soladay Ion Toothbrush runs on solar power. A small solar panel that is similar to those found in pocket calculators generates a small current that then sends streams of ions through the bristles. Ions attack bacteria which are known to cause plaque and tooth decay. In other words, with the ions no toothpaste is even necessary. Better yet the brush even ships with replacement bristles. It retails for $29.95.

Soladay