Esbit fuel tablets differ from most other solid fuel tablets in that they are non-toxic and completely consume themselves when burned. Most other fuel tablets leave a toxic residue behind. The manufacturer states that Esbit fuel tabs can be safely burned inside a properly ventilated room. They are very small and extremely light weight. They burn for about 15 minutes and are a great toy steam engine fuel.
Sold by the box. One box contains 20 tablets 4 grams each.