Small plastic and glass pieces in compost
I bought a couple yards of "planter's mix" from a local landscaper supply shop. The worker said it was an organic compost with added nitrogen. $46/yard.
I chose this company because they are within a mile of my house and very convenient. Other options are not closely located.
I got home and ran my fingers through the compost mix and noticed numerous 1-2cm sized plastic and glass pieces and some small wire and fishing line chunks.
My questions are:
1. Is this common or expected in what companies sell these days?
2. Is this debris harmful when I add the planters mix into my raised beds?
3. Is it worth hand sifting to get the debris out?
Thanks in advance.