Automatic drain sealer

An apparatus for preventing insect and gas infestation into an enclosure from a drain located within a receptacle for retaining a liquid comprising:

• (a) a sewer line for connection to said drain and for expelling said liquid therein;
• (b) means for sealing said drain comprising first and second circular coupled parts, said first part being decoupled from said second part for blocking said drain when liquid is to be retained within said receptacle, and said second part being buoyant so as to float on a liquid surface;
• (c) means attachable to or detachable from said receptacle to provide a reformable clamp means having distal and proximal ends wherein said reformable clamp means is detached at said proximal end from said receptacle after said first part has been decoupled from said second part and utilized to block said drain opening, and said reformable clamp means being reattached at said proximal end to said receptacle when said first part has been recoupled to said second part and when liquid is being expelled from said receptacle;
• (d) a U-shaped bail means having first and second equal length longitudinal legs wherein each leg includes proximal and distal ends, said distal ends being integrally joined with one another, and further said proximal ends being freely movable in an inward and outward direction;
• (e) means provided by said reformable clamp at said distal end for slidably aligning said first and second recoupled parts over said drain, wherein when said liquid is completely expelled from said receptacle said respective first and second recoupled parts will automatically block and seal said drain to prevent insects and gases from entering said enclosure from said sewer line.