i've never heard of a lawn company being sued before. at least not in my area of the country. you can't kill grass cutting it too short. it will always grow back. here in the summer time my dad's yard is 1.5" tall since he cuts it low. the neighbor's is about 3" tall. they both turn brown at the same time. the shorter looks better even when it's brown. as soon as it rains they both turn green again and the shorter yard looks awesome while the taller yard looks shaggy and out of control. this is on southern warm season grasses. maybe cutting it a little taller will make it stay green for a few more days but it's not enough to matter. if it's hot and dry it still turns brown and looks worse since it's taller. might as well mow it short and not worry about it.