I have a new customer whose yard is constantly wet, even though we've been in a drought. I now have to use a push mower because all other mowers are too heavy and leave ruts. She does have an irrigation system and we have checked for leaks. The water meter never moves unless she has inside water on. I thought maybe it could be a spring but not over the entire yard. Is there something I can spread that would make the yard more firm and dryer? Any suggestions?