Anyone have any tips for using a slit seeder to help fill in some bare spots and/or lawns that have been damaged by the drought last year and only have like 60-80% of turf left? Is it crucial to fertilize right after or would the seed still stand a strong chance of germinating without it? I've read it is better to purchase seed from a lawn and garden center instead of a big box store like lowes because the seed is more alive or healthy, is this true? Does the grass have to be watered immediately after or will the seed be ok if I let nature take it's course ( rain)? I've got 3 lawns set up for this tommorow and I don't want to have to set up sprinkler systems if I don't have to, as that would cramp my time badly.