When Buddy was two he decided not to go in his crate for a time. I wrote about it here https://auntgranny.wordpress.com/2008/07/08/buddys-birthday/ . A few months ago I decided to get Buddy to go in his crate before I left for work. It took some time but he did go in that day. Now he is going in every day again. He goes in better than he did before his little break.
I tried some new treats but they didn’t make any difference. I guess he just wanted a short vacation. All is well that ends well and we are all happy once more.