I just received a shipment of new furniture and I was sure to use Feliway around the base of all the furniture so hopefully my kitties will not find them to be even more scary new things. But I was afraid to spray it directly on the new fabric furniture or on to the leather parts for fear of I don't know what, staining? I just could not find it in me to spray something on brand new furniture when the bottle itself says nothing about NOT staining. Are my fears unfounded?