Disinfotainment

I have a Fairy Ring in my front yard. A Fairy Ring is a large ring of mushrooms, and the ones in my yard are unusually large, each one growing to almost a foot in diameter. I noticed mushrooms in my yard in previous years, but I never noticed them growing in a ring until this year. The mushrooms are usually one of about 7 species, the most common Fairy Ring mushrooms are edible but there are a couple of species that are intensely poisonous, and look almost the same as the edible ones.
I checked around the web and there aren't any good ways to get rid of the mushrooms. They grow from a huge underground mycelium, the suggested treatment is to dig up and discard the soil from the ring and about 2 feet of dirt around it. But you're probably going to spread around the mycelium to other parts of the lawn if you drop any dirt, you have to treat it like toxic waste. There is only one real solution: to bulldoze the yard, and start over with a fresh layer of fumigated, sterile topsoil.