Mitchum Cool and Dry deodorant

I have had trouble with this product crumbling . I thought it may have been just the one particular type but both my husband and I have tried 2 different Mitchum products and the same thing happened each time. I have had to throw out half used product due to this. The bar code on the latest is 3 0997-3187-00 9 I have always found Mitchum to be a good product as far as it working, but it's frustrating to throw out a half used product. I would like a compensation coupon to replace at least the last purchase.

Lorna