I live in the PNW and recently purchased a home with a large Oak and Pine tree in the front yard. Granted, nothing is growing underneath the Pine tree, but as we get lots of moisture, most especially this time of year, I've noticed I have small white toad stools growing in the lawn that is not covered by the canopies of the trees. Is there a fungicide or some sort of organic treatment I can use to kill them without causing harm to my two dogs and other neighborhood pets? The quality of the grass isn't great. The quality of the grass in the backyard isn't great either and would like to make it better, again without harm to my dogs. When they chase each other tufts of the grass come up and there are a lot of sparse patches that encourage the dogs to dig in the mud. Yes, they like to eat the mud. Some people's kids eh? Anyway, any advice or help is much appreciated. I love having the yard to work in and would like to do as much as I can without calling in professional help to keep my expenses to a minimum. Thanks in advance for any/all advice.