I have used Kenmore and DVC allergy bags and they seem to be better. I recently changed my first very full bag of Envirocare and for the first time I didn't have to clean the exhaust foam filter - it was clean! I had to cut open the bag to get the valuables out and found that these bags don't tear - another positive thing about them. They're too big for my Kenmore Progressive as some have commented, but that's a good thing - the larger surface area allows for better airflow. Simply tuck in the sides and end and close the lid, being careful not to pinch the bag.