Dave -
Chas, have you done the shake test on your Quilted Northern? We used to use Quilted Northern and it passed the shake test a few years ago. When I started noticing big chunks of paper exiting the tank when dumping, at least far more than "normal," I did another shake test and our Quilted Northern did not disintegrate. Not even close. The package said septic safe. So we switched to Angel Soft. Maybe we just got a bum (no pun intended
package of paper. Just wanted to let you know it might be a good idea to test it. Just in case.