Today, I found 6 ball bearings in my pump's strainer basket.
I am new to pool ownership and I have never seen this before.
My first thought was they are from kid toys but I the kids don't have any toys with ball bearings.
So, who can solve this mystery and figure out how the ball bearings got into my pump's strainer basket?
I added the penny in the photo to show size of ball bearings. Thank you for your help!