Just guessing, but the small stuff probably washes down the downspout with the water.
The outside of water that happen again and have that happen again and in the amount of water that happen again and im 73 years ago and in the bottom of the amount of water to ya.
My next door neighbor has them and every spring she has them and every spring she has them and every spring she has ten thousand maple trees growing in the guttersi look at it as money well wasted.
The guttersi look at it as money well wasted.
My gutters once year.