Update to my last post: the Timberland Boot Kit helped a bit, with a few cycles of brushing and cleaner and then conditioner. But what ultimately helped most was dried bread. :
Amazon.com: Timberland Boot Kit Shoe Care Product Set, No No Color, One Size Regular US : Clothing, Shoes & Jewelry
3 TIMBERLAND Saving Hacks - (Tested) - How to Clean Timberlands Boots - YouTube
Timberland Product Care | shoe, leather, boot, friendship, tutorial | #DidYouKnow our Boot Sauce Conditioner is a big hit for caring for your leather bodied Timberland shoes? SHARE this tutorial with your