Yep, mine have a half log in their cage. The twins went right after theirs just a few days after coming home. New cage, new home, & only 8wks. old but they had that instinct to strip the bark off the wood.
It seems that your question has been answered... But just so you know, those toys made out of rope can be dangerous for your babies. Their nails can get caught and they could get tangled up easily...meaning broken toes or they may self mutilate to get themselves free.