I purchased some seeds from the local Co-Op after killing off the weeds/lawn last year. I chose a high tolerant Kentucky strain mixed with another drought resistant that grew fairly quick, but I noticed I had splotchy patches. The Kentucky look to me like a type you'd put in a pasture or field, when cut the patchy areas were more noticeable, almost a spidery look is the best I can describe it. So my question is, should I kill the lawn off again, wait the three weeks, fertilize and then put down some Bermuda or else? The only grass I know that's more evasive and that can take control is centipede which is very common in my home state of MS, but I now reside in Middle TN. It's also a rental, so I do not want to spend too much to remedy this. What product available to the general public do you recommend to take control of the trash grass and weeds?