My chins are not eating the timothy hay

I usually purchase Kleenmama's third cut but last years batch was poor quality so I thought I would try Rabbit Supply but my chins will only nibble so I tried American Pet Diner which the quality has been going downhill for sometime and the batch smelled old and musty. I also tried Small Pet Select which they did eat but the new box was too dry, brown and they wouldn't touch it. I want to go to a local farm for timothy but it is eastern timothy and I do not know if my chins will eat this...

My chins are not eating the timothy hay