Abstract: A stake for keeping a bag mouth holder and opener and refuse bag in combination secured to the ground in a fixed position whereby the bag mouth holder and opener has the general shape of a rectangular perimeter of a hyperbolic paraboloid to which the stake can be removably attached or integrally connected such that the stake can be driven in to the ground when the bag mouth holder and opener is positioned in the mouth of a bag.

Abstract: A stake for keeping a bag mouth holder and opener and refuse bag in combination secured to the ground in a fixed position whereby the bag mouth holder and opener has the general shape of a rectangular perimeter of a hyperbolic paraboloid to which the stake can be removably attached or integrally connected such that the stake can be driven in to the ground when the bag mouth holder and opener is positioned in the mouth of a bag.

Abstract: A device for keeping lawn waste or other flexible refuse bags open while filling. The device is made of a resilient and flexible material so that it can be squeezed and easily inserted into the top opening of a refuse bag. The size of the device is proportional to the interior circumference of the opening of the bag so that the device expands when released securing itself within the opening of the bag. The shape of the device is that of a rectangular perimeter of a hyperbolic paraboloid or saddle, having segments that grip the interior corners of the bag when the device is released into position. Once the bag is filled with waste it can be squeezed again, allowing for the removal of the device from the bag and the preparing of the device for insertion into another bag.

Abstract: A device for keeping lawn waste or other flexible refuse bags open while filling. The device is made of a resilient and flexible material so that it can be squeezed and easily inserted into the top opening of a refuse bag. The size of the device is proportional to the interior circumference of the opening of the bag so that the device expands when released securing itself within the opening of the bag. The shape of the device is that of a rectangular perimeter of a hyperbolic paraboloid or saddle, having segments that grip the interior corners of the bag when the device is released into position. Once the bag is filled with waste it can be squeezed again, allowing for the removal of the device from the bag and the preparing of the device for insertion into another bag.