After we had been tested several Gritter, we have now ended up with this hand spreader. Despite almost 700sqm lawn fertilizer can be better deploy with this universal spreader. No clogging or jamming. The Wolf universal spreader is relatively cheap and works well. The manual could be better. The data for the output quantity are deficient. After two years, a battery change was due. With a little practice, the spreading and the distribution is very good. Conclusion: 100% buy recommendation.