i put the marshals tube in there that i got today and baby even slept in it. For the first 10-15 mins or so it was in there was non-stop ferrets running through it and scratching at the inside to make it bigger. I also put the small pet teach and treat which is a little too easy for them.
That looks like an excellent treat toy for beginner's
Ferrets: Contessa Kitties: Watson, Oskar DIP Sinnead, Vincent, Boris, Zeus and Athena, Willow, Mr. Frodo, Indie, Lucrezia, Judge, Odin, Miss Emily, Suki, Cody, Aristotle, Butterscotch, Frankenfurter. RIP Herne, Ligeia, and Mr. Stubbs