further radially extending external flange area 30 fig2 provides a vented container 100 that includes a vent 120 on top of this vent 120 is affixed a domed structure 5 a flange area 30 is fastened to the container 100 such as by adhesive sonic welding in mold or the like in such a way as to maintain coverage of the vent 120 by the internal area 10 of the dome the venting area of the dome 20 is located such as to not cover or block the vent hole 120 on top of the dome 5 is placed a porous expandable absorbent 130 the absorbent 130 has an upper and lower surface and the dome 5 is positioned against the lower surface placed on top of the absorbent material 130 and attached to the container 100 is a rigid cap 140 with at least one perforation or opening 150 reference is now directed to fig3 where an additional or second domed structure 200 is used in the container construction the additional dome 200 is positioned immediately beneath the opening 150 and adjacent the upper surface of the absorbent 130 so as to provide a further closure mechanism when the absorbent material expands to prevent either leakage of the contents or seepage from the environment as seen from fig3 the second domed structure 200 is placed in an inverted position when compared to the first domed structure 5 each of the first and second domed structures.