I often see critters in mushrooms but i do not worry about it and the small larvae may gross some people out and cause them to toss the shrooms.
Here is a good read on the subject.
https://mushroommarauder.com/blogs/...ms/how-to-get-bugs-and-worms-out-of-mushrooms
Here is a good read on the subject.
https://mushroommarauder.com/blogs/...ms/how-to-get-bugs-and-worms-out-of-mushrooms