What should I do about dead patches in my lawn?

That depends on what caused the dead patches, if it’s grubs we recommend the bayer dylox grub control. If it’s fungal, Scotts disease X is recommended to stop the spread. If the disease has gotten down to the crown, it is dead and will need to be raked away and reseeded in early fall. If the lawn is simply going dormant you still need to give the lawn at least ¼ in of water a week to keep the crowns alive so it will come back in the fall. After the initial cause has been determined, you would proceed to reseed as normal. Rake away the dead thatch, break up the soil and even it out, put down a starter fertilizer if desired, broadcast your seed, use straw or a paper-based mulch to hold in water and the seed in place and water, water, water.