I am new to vermicomposting and I am thinking of materials to use for bedding that I can easily get and cheap. I work for a landscape contractor and we use cellulose blended mulch for grass seeding and was thinking that I could use the old leftover mulch for bedding. I've read the MSDS sheet and didn't see any chemicals that might be harmful. It does say it has a biostimulant in it. I thought is would work well because its basically shredded up paper. Has anyone tried this or do you have any thoughts about it.