> The card was thicker and had a heavy waxy coating on inside. Also Rats=20 > and Humans don't eat the same stuff. > Rats don't like Celery or peaches, but like all cereals and also sweet=20 > corn. They are not so fond of peanut butter as mice are, but do like fat. > > I find mice especially like yellow pvc. They were careful not to eat the= =20 > copper screen. > Rats seem to prefer organic materials to PV > =20 About 25 years ago we had a rat problem in the old house we lived in. I=20 bought some DCON rat poison. I took some of the packets of poison and=20 set them out. I checked the places I had put the packets. They were all=20 gone. When I went to get more the complete box of poison was gone. I=20 bought another box and the same thing happened. but the rats were gone. When I talked to an exterminator about it his explanation was the the=20 rats were breeding and they were taking the cardboard to build nest=20 with. This was confirmed later when I removed an old shed next to the house and found remains of the colony. OLD BOB --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .