I know that last summer I had the constipation problem with Sadie and she still continues to be plagued by it. She receives an eight of a teaspoon of miralax daily and her schedule is pooping every other day and she refuses to use the litter box for that particular function. I did take her to the vet and after several tests they found nothing wrong to account for the constipation factor. I do the poop patrol every day so I can keep track of her bowel functions and because she is who she is, I accept that.