I hate bugs. They eat books. They love books. Most better bookbindings are Cloth, and the cloth is filled with Sizing, to smooth it. The sizing is paste, usually made from wheat.
Roaches love it.
So do silverfish. Yup, it was Roaches or silverfish. They don't just survive on a diet of books, they thrive. So, keep your house or book room insect free. Otherwise, you're just going to feed the bugs.