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Title: Didn't work for me
Review: One of my ferrets quit using his litter box and started using a corner on a shelf of his cage instead so I bought these. I tried to use just one these springs in the corner at first and it didn't work. My ferret just backed up to it and poo'd on it. I then tried using all four in the same corner and all that made him do was poo in front of the springs. My ferret would also try pulling and chewing on the springs so I gave up and removed them. I bought a toy that fastens to the cage and put it in that corner and finally my ferret quit going there and started using his litter box.
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