CJS wrote:
Attached are photos of mushrooms growing on my garden. Which I get every
year due to 2 rotting tree stumps, but not normally so large. Just
concerned if dangerous as I have a 3 year old daughter.

Can anyone help

I suggest you pick up a bag of hydrated lime from a tile supply store.
Note: "Pulverized lime" sold in the box stores is just ground up
seashells and is much slower to react. The lime will increase the pH
and get rid of mushrooms and moss, but it is very dusty.