Today I applied your Round 3 & 4 that consists of Fertilizer, Weed control, Insect Control & Grub Control. Please keep in mind that the weeds will fully decompose in 3-4 weeks, mowing of the lawn can be done in 24hours (recommended height is 3-4 inches) Please stay off the lawn for 2-3 hours so the product can fully dry up and be absorbed into the grass blades.