About 6 months ago I brought in 4 strays from outdoors. They were vaccinated spayed/neutered. I gave them litter boxes and they seem to use them. I keep them in a room while we are gone and when we get home we let them out (they have litterboxes in the room). When they come out they are fine and they have their litter boxes close by, but the 2 females keeping peeing on our blankets. They don't do it everyday, but sometimes. I always take them and show them their litterbox when they do it, but I don't know how to deter this behavior. The litterboxes are clean and only the females do it. Any suggestions?
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