Hiya guys,

Thanks for the comments. I was using one litter tray (the breeder had all the kittens using one), but I've put an additional one upstairs outside out room so if they need to go, there's one a little closer - and now both trays are getting used and (touch wood), there have been no more accidents.

I'm using the World's Best Cat litter, which they seem to be okay with

They kept theselves mainly to one room for the first three or four days, and even though they've been allowed up here since about 3 days after we got them, they've only really started venturing up here since Friday of last week, or so. I think as you guys pointed out, it might just be a bit far for them to go downstairs if they'r caught short needing the bathroom

Thanks again! xx