Edible hamster toys contain sawdust and honey and this makes your hamster think it’s food. It can make them ill and could cause death.
Compacted sawdust chews are NOT edible or safe and should be avoided. Consumption of these products can cause a blockage in the stomach, resulting in the loss of your hamster. Also if your hamster does eat them it will be too late, a hamster can not throw up and vomit like a human can.
It is safe to stick to natural wooden chews as they will not be fooled into eating the wooden chews.
This Change.org Petition started on 30th March 2021 https://www.change.org/p/pets-at-home-ban-the-sale-of-pets-at-home-chew-toys-that-are-unsafe