The smaller the particles are, the more damage they can do to the human body
After all, cigarettes butts may also be causing harm to the birds

The method of claim 19, wherein the ligand L 'used is a di-, tri- or tetracarboxylic acid selected from the group consisting of: C 2 H 2 (CO 2 H) 2 (fumaric acid), C 2 H 4 (CO 2 H) 2 (succinic acid), C 3 H 6 (CO 2 H) 2 (glutaric acid), C 4 H 4 (CO 2 H) 2 (muconic acid), C 4 H 8 (CO 2 H) 2 (adipic acid), C 7 H 14 (CO 2 H) 2 (azelaic acid), C 5 H 3 S (CO 2 H) 2 (2,5-thiophenedicarboxylic acid), C 6 H 4 (CO 2 H) 2 (terephthalic acid), C 6 H 2 N 2 (CO 2 H) 2 (2,5-pyrazine dicarboxylic acid), C 10 H 6 (CO 2 H) 2 (naphthalene-2,6-dicarboxylic acid) , C 12 H 8 (CO 2 H) 2 (biphenyl-4,4'-dicarboxylic acid), C 12 H 8 N 2 (CO 2 H) 2 (azobenzenedicarboxylic acid), C 6 H 3 (CO 2 H) 3 (benzene-1,2,4-tricarboxylic acid), C 6 H 3 (CO 2 H) 3 (benzene-1,3,5-tricarboxylate), C 24 H 15 (CO 2 H) 3 (benzene 1,3,5-tribenzoic acid), C 6 H 2 (CO 2 H) 4 (benzene-1,2,4,5-tetracarboxylic acid, C 10 H 4 (CO 2 H) 4 (naphthalene-2,3,6,7-tetracarboxylic acid), C 10 H 4 (CO 2 H) 4 (naphthalene-1,4,5,8-tetracarboxylic acid), C 12 H 6 (CO 2 H) 4 0 C 220 0 C

This includes most indoor public spaces and workplaces
By the end, you'll have a deeper appreciation for this accessible classic
And thank you for being part of the solution.