Transparent glue with items inside can be cleared with bird boosters and by matching the items covered in glue with uncovered items on the board. Items covered in glue cannot be moved. Therefore, you’ll have to be able to make a match by moving uncovered items.

You can clear a light pink glue can with bird boosters. On levels with TNT boxes, you can clear the pink glue by detonating the TNT box next to it. You can also detonate the TNT box by making matches right next to it.