Litter training

Hi

I was wondering if anyone has any advice. Our male neutered bunny has been using various litter trays around our home for over a year now, pretty much since we got him. Recently we got him a female friend (a baby) and she will only pee in the trays. Our first bunny has now totally regressed and just does anything anywhere! Its very frustrating as he used to be so good. Now I am running around clearing up after them constantly. Can anyone help me?

He's not lost his good habits, he's just making his territory. I'm not an expert on this but I would imagine he will calm down again when he gets more used to having his friend there.

x x