I cant count how many times I have heard several different ways of using granular apps. Its better to mow first then use Granular. Its better to keep grass tall and thick then Granular. No rain then water like crazy Or Rain or water for 3 days then use granular. Personally I think it is better to mow first taller then usual then apply granular when there is dew on the ground or when lawn is semi wet. What do you think?