One of my cats is obsessed with licking plastic bags (bin liners). She is getting more and more obsessed with it. This morning she ignored her breakfast to continue licking a bin liner I had got out. When I put her bowl in front of her she continued licking the bin liner. Eventually one of the other cats ate her breakfast as well as her own, and she was going round looking puzzled at empty bowls.
Apart from keeping plastic bags out of the way what can I do about this???