Been using grass litter, Oko cat litter and yesterdays news, 2 indoor cats have a buffet of litter boxes which works well...My cat has a licking problem did the food testing do not think its that., been over a year now..... I kinda doubt its the litter but wonder. Usually if he does not like a litter he'll pee everywhere but does not do that..He does have a bit of anxiety. Vet said try CBD but I'm a bit hesitant. Has anyone tried these litters and noticed excessive licking of back legs? Very odd to say the least!! He looks so thin back there.. Unless its something in his urine??