First, wash the dolls thoroughly to get the cat food out, and hopefully the plastic doesn’t absorb the smell.

Then season your dolls lightly with catnip. Refresh the seasoning as needed.

Note that some catnip brands are better than others. Growing your own fresh is amazing if you have the green thumb.

Note also cats will get over saturated to catnip exposure. Wait a week or two between re-seasonings.

Works on non-doll items as well!