A disposable animal litter pad is combined with a moisture impermeable bag for easy disposal. The litter pad includes a sorbent pad laminate for the collection of animal urine and a top claw resistant screen made of a urine permeable, flexible member of material substantially inert to urine. The disposable...http://www.google.es/patents/US4756273?utm_source=gb-gplus-sharePatente US4756273 - Reversible bag for use with litter pad
