I'm curious, do you fellas down here in the south find the need to dethatch lawns? I have a quote that I'm working up for a potential customer and I noticed there is a bit of thatch in her yard. The grass is a centipede. Also, I've been noticing some bare spots in lawns around here lately, seems to me that everywhere I look, in a centipede or St. Augy lawn there are bare spots. Usually shady, sandy and have that low, dark, green moss growing either lightly or in a profusion. Suggestions?