I tend to use Great Stuff foam around the house. These straws fit the cans well and work as well as the originals too (despite looking less cool). Don't forget to remove and clean the straws and especially the can nozzle promptly after using with acetone. Even with cleaning right after, I have not been able to get more than 2 uses out of a straw. Still, a pack of 30 straws will last me quite awhile, so happy with the purchase.