[Nijidoragon]

I want to use them for a little ball pit in my old hamster ball that I attached to the cage like a nest. I have pieces of fabric in there now but they push them out.

 

[DLTurner]

I saw them as a nesting suggestion for sugar gliders, and sugar gliders are very sensitive to chemicals and such, so it should be ok! If you're still concerned you could get white ones because they wouldn't have the color dye. Or you could use cotton balls too.

 

[Jessiferatu]

I have a few laying around in the rat room, they've never caused any problems. Though the rats don't pay them much attention, lol.

 

[Snickepice]

I have them in my cage and the rats destroy them, but I have never had any problems with them ingesting them. They will pee on them, so you have to be careful of that.

 

[Isamurat]

I would be careful with the material used. Wool and rats dont get on great as its quite fiberous and can get tangled in nails and such, fleece is much better if you could make them fleecey pom poms.

I would definitly not give them cotton wool buds or cottom woold style hamster bedding, it has been known to be eaten and causes horrible issues when it is. Even if they dont seem to eat it its best to not put anything in there cage you wouldnt mind them to eating a bit of. They may take months to try something new in the cage but generally they will eventually try a nibble at everything

 

[Mitsy]

Here is a diy on how to make fleece pom poms, I think they would be safer and less of a risk then other materials that could hook their nails. http://familycrafts.about.com/od/nosewfleeceprojects/ss/fleecepomball_4.htm

 

[Kitterpuss]

I let my rats play with pom poms, but only under careful supervision during freerange. They like to kick them about and run around with them in their mouth. They have a tendency to disappear into a corner and rip them up though and like Isamurat says, the fibers could be harmful so I wouldn't leave them alone with pom poms.