Patent ID: 7380519

Claim:
A method of handling pet waste using a pet litter box, said pet litter box comprising: a litter box main body including: a litter container for holding liquid-passing granular litter, the litter container including a bottom plate having a plurality of apertures sized for preventing the granular litter from falling out; a liquid-absorbing sheet disposed below the litter container for absorbing the liquid passed through the litter; and a liquid-absorbing sheet tray for holding the liquid-absorbing sheet, the liquid-absorbing sheet tray including: opposite front and rear walls which are curved toward each other and toward an interior of the liquid-absorbing sheet tray to define two concave curves, respectively; a first handle attached to an outside of the front wall and at a central portion of the concave curve defined by the front wall; and a second handle attached to an outside of the rear wall and at a central portion of the concave curve defined by the rear wall; wherein a rear opening is formed in a rear wall of the litter container for allowing the first or second handle to protrude through the rear opening to an outside of the litter container when the liquid-absorbing sheet tray is placed below the bottom plate of the litter container; and said liquid-absorbing sheet tray is removable from and insertable under the bottom plate through a front opening formed in a front wall of the litter container, and is reversible in the front-back direction so that any of (i) the front wall with the first handle and (ii) the rear wall with the second handle of the liquid-absorbing sheet tray can pass through the front opening of the litter container when the liquid-absorbing sheet tray is inserted under the bottom plate of the litter container; said method comprising the steps of: removing the liquid-absorbing sheet tray from under the bottom plate through the front opening of the litter container by holding and pulling one of the first and second handles; reversing, in the front-back direction, said liquid-absorbing sheet tray; and re-inserting the reversed liquid-absorbing sheet tray through the front opening of the litter container by holding and pushing the other one of the first and second handles.