What should I do if my Persian cat avoids the new litter tray?

"A smooth sea never made a skilled sailor," they say, and your Persian's sudden disdain for the new litter tray is just a gentle wave. Try placing a small amount of used litter from the old tray into the new one to create a familiar scent bridge-cats are creatures of habit, and that familiar smell can coax them into accepting the change. Also, ensure the tray is in a quiet, low-traffic spot away from their food and water, and consider keeping the old tray nearby for a few days to ease the transition without forcing it.