Covered in with 〜だらけ
Grammar: Condition
A noun followed by だらけ it means something is “covered in” or “filled with” that noun, which is something undesirable.
だらけ may be followed by の then the item covered, but this may be excluded when the item is obvious.
This is used for things covering in a scattered way.
Upon hearing Usami say she’s stopping by the school library, Uchimaki says he wants to go with, and Colette tags along. Realizing Urushi is hiding in a box to try and scare him, Ayumu sits with his back to the box. Kotoha, Yui, and Sacchan enter another exhibit room in the museum.Examples
Covered in books with 〜だらけ

Filled with carelessness with 〜だらけ

Filled with dinosaurs with 〜だらけ
