u/No-Leader-2281

yall help a twin out 💔

Its this white thing that I found when I took out my cupboard drawer from its hinges. Its in the corners, all across the back planks, around screws and it looks kinda fuzzy. Plus its damp and waxy. any idea what it is?

and should i be worried? as in harmful? i have a doggy at home

how do i clean it n stop it from spreading

any info is appreciated!! :)))