What else is in this product?

We have witnessed no adverse effects on our pet. The dye is very colorfast and as we applied the mulch, none of the dye came of onto our hands.

I use this Mulch around a landscaped pond area and do not use any chemicals in my pond. I have had some of this wash into my pond after a very hard rain and it didn't hurt the frogs or fish. I would stay away from the rubber or dyed mulches.