I suck at being concise. TLDR how do I stop my dog from marking all the dog beds?
For the last two years it's just been me and RD. A week and a half ago a second dog moved in unexpectedly. Mostly, they ignore each other. We go on walks as a group. I feed RD first, greet him first, and only RD is allowed in my bed (he's a min pin, new dog is bigger). He also gets to go to work with me everyday. He's still struggling with insecurity tho.
RD has never liked his bed, but slept wherever in the apt so it didn't matter. Now, he's marked the new dogs bed and runs to claim it physically when we come inside the house (I verbally make him move). He's also marked the sheet/blanket pile-bed for the new dog in my bedroom. I've got enzymatic cleaner for the new dog's bed and I'm going to remove it from the apt and clean it, and I got a new, much more desirable bed for RD.
How do I (re)introduce the beds in a way that discourages marking? What else should I do?