These are from bags that were kept outside and deteriorated from sunlight. Thereby the contents have some leaf debris, and white threads of the old bags
But, you can screen all that out with some 1/4inch mesh. Which you would do anyway when you wash the beads prior to use
$5 per bag. Each bag is a feed bag that is approx 1/2 full so that you can lift it. They weigh about 30lbs