I did actually review the eco-balls previously, but, since I ordered them more than once, I guess you want me to review them again. My two 6-month-old Irish Setter pups LOVE these balls and play with them vigorously, Unfortunately, one of them also enjoys shredding the balls (especially after he takes one from his brother). We try to watch him to make sure that he does not start shredding a ball, but he is pretty quick. We have bought 6 of the balls (2 Lava and 4 Ocean) thus far, but we do not think we will buy them again (at least not until the pups are older). The one who chews up the balls actually swallows the wool, and he has vomited it up on two occasions. As much as the boys love these balls, I don't want the one making himself sick, and I can't afford to keep replacing them on a regular basis.
I originally purchased these as a gift for my eco-friendly daughter. Loved them so much I bought a set for myself. The dryer balls replace my dryer sheets with the added bounce of fluffing clothes, towels, and bedding as you dry.