thomas rubino wrote:Hi Albert; Welcome to Permies!
I'm afraid I know nothing about spores and how to eradicate them. So any suggestions I make should be taken with a big grain of salt .... I could be full of it!
Clean your garage. Start with the rafters and end on the floor!
You might even use a pressure washer. Maybe compressed air to blow it out to start.
Sealing the concrete floor and using plastic walls might be enough in conjunction with the cleaning.
As far as fungicides, only use organic / natural methods.
If they do not work, build a new shed outside for shroom growing.
Then store your freezer and lawn mower in the garage.