I don't see how you can confuse puff bals with anything else, ram,bler and they are delicious.
One of the tree srtumps I regularly trip over is absolutely covered in smallish orangy brown fungi- must be 100 of them. But I keep remembering the people who had to have/are awaiting kidney transplants and stick to ones you can't confuse. Like wood blewits or whatever the ones coloured pale lilac/blue are.
PS Got rid of an absolutley hUGE molehill in my garden with 2 applications of meths.No sight of them since, 10 days later.