SPRINGING OUT TO AGAIN DO YARD!!

pictured here is our "way back" as we lovingly call our back yard.
we had six trees taken down and now will have the last pine taken soon as the weather permits, and the tress in the near area all trimmed. poor pine is great looking on one side but dead on the other. we cut the grass to midway, so that we can get to the mess left from getting the sumps "removed". very soon we will level and reseed, again, when the weather and time allows. the flag in the ground in the one photo is a small tree who's stump was forgotten. the orange line is cable that will be buried may 31st! rabbits and such eat thru the lines often. new cable was replaced this winter and so far the animals have attacked other things in our yard.
yes!! those are cows skulls! some time i will tell how i took heads of cows, skinned and be-brained and prepared to be art objects for my students. they have become homes to many birds!

I NEED YOUR HELP...we have a huge patch of mushrooms growing on the south side of our home..have not find removal remedy !!
KNOW ANY! please share!