Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Effective for camping or backpacking

I take a couple of these in my emergency kit when heading off into the wilderness. While there may be lighter/smaller options available, I like the straightforward and consistent performance from these nuggets. I take them car camping too. They can take a second to get lit with matches or a lighter, but once started they perform well to get a fire started every time. I recently used one on a drizzly spring backpacking trip and they started up the damp kindling without a problem. Be sure to place the rounded side down for the best performance.