Just thought I'd share my experience with you. I bought some 5 grow bags called Verve from B&Q for £8.
I generally find these bags are compacted due to the weight of other bags on top on the pallet they are on. So I got back to my greenhouse and started to loosen them up before splitting the bags open and putting the contents into a plant pot. During this process I again found I had to break down the contents to make it more manageable, what I wasn't prepared for was finding small pieces of glass in the bags. I have found 5 pieces in 4 bags. I filled up my containers as required but reading the bags description there was label stating it was using recyclable material although glass is not mentioned.
I went back to the store and explained what had happened and showed the pieces of glass to the stores personnel, she then put me onto a Supervisor who thought it was ok as glass is recyclable!! Anyway she went and discussed it with the Deputy Store manager who told the Supervisor to offer me a refund on 2 bags. I explained I had used the contents and was not interested in a refund more what they were going to do about the glass being in the bags in the first place and how would they stop people cutting their hands? Needles to say the answer was we will email head office and take it from there. I gave her my number and said let me know the outcome so I can see if it is an appropriate response. Still waiting 4 days after.