While there are no guarantees, A well maintained barrier, using one unit of pressure,(just before green) , has the possibility of lasting weeks or even months.
Our test barrier has lasted months to this day with zero leakages yet, but we have also had barriers that have not lasted a few days due to certain reasons such as uneven or rough surfaces, over inflation of the seal, improper placement of the barrier (not flat on the ground, or tight against the wall) and other reasons individual to them such as sharp implements placed in the entrance or other situations similar.