Unlike other reviewers, I can confirm the fertilizing effect in good conscience. For I have ignored the notice to apply the whole with the Gritter and made it by hand. And you can see that now. There are areas where the grass is lush and green and growing and others where almost nothing is. These are then probably the areas where I have probably applied no fertilizer. The smell is only 2-3 days perceptible, then there was nothing to smell. Only the price I find too high.