How does Robert Crais use imagery in The Monkey's Raincoat?

Imagery:

"The longer I looked at Garrett Rice, the more I wanted to cover my face with a handkerchief and fog the air with Lysol"

"Lou Poitras has a face like a frying pan and a back as wide as a Coupe de Ville. His arms are so swollen from the weights he pumps they look like fourteen-pound hams squeezed into his sleeves"