It's too hot to wear pants so my and I worker wear shorts. Today my worker was complaining that his legs itched and kinda burned. I didn't have this problem today but I have had it happen b4. It only seems to happen when it is hot and humid. It also dosent seem to matter if its an untreated or treated lawn. Also, it seems to only affect my legs when on the ztr. What could this be? Lasts a couple hours and then goes away. Any ideas?