According to the Nina Ottoson website, their products are made from "only the very best materials in the care and safety for our dogs, ranging from packaging to the smallest detail can be submitted for recycling or incineration." The wood used to make the toys comes from Swedish beech trees and every part of the tree is used in the process. Their plastics are non-toxic and recyclable and are made from 40% plastic and 60% wood shavings.
Evie loves playing with them and as a Jack Russell she got the hang of them pretty fast, however it was still a bit of a challenge. It's fun for the both of us and I don't have any eco-guilt.