I live in Houston and last summer we were away from the house for about a month and came back to a front lawn (St. Augustine) that had been destroyed nearly completely by chinch bugs. Near the end of summer/early fall I went to Home Depot and the "Scott's" sales rep suggested I put down some Scott's Winterguard. Well that didn't do anything other than make clovers and weeds sprout up. Now it's almost spring and I have very little St. Aug growing and weeds have taken over. Wondering what my options are. Should I till it up and seed or sod. Can I seed without tilling? Do I need to aerate before seeding? I am pretty much a novice, so any advice is welcome.