Instruct: Classify Amazon reviews into positive or negative sentiment
Query: K&H Cool Bed 3, Large

I purchased this bed for my elderly lab, but, I couldn't get him to use it no matter what I did - I have two other smaller dogs, and I couldn't get them to use the bed either - they'll only lie on it if I sit there beside them - once I get up, they get up - they're not impressed with the bed at all.