to remain silent or hold oneself aloof in a sullen, ill-humored, or offended mood: Promise me that you won't sulk if I want to leave the party early. a state or fit of sulking. sulks, ill-humor shown by sulking: to be in the sulks. Also, sulker. a person who sulks.
Some cite the fact that secretions from the millipede repel other insects as a reason why they are beneficial. While millipedes do not bite, the sight of them can still be unnerving, especially when they appear in large numbers. They have the ability to crawl up walls and enter homes through small openings.
Although silverfish have a creepy appearance and are occasionally mistaken for venomous centipedes, silverfish are not known to bite humans and do not carry diseases.In most cases, a silverfish will instantly flee to safety when it is disturbed.hile silverfish are harmless to the human body, they do cause damage to clothing, books, papers, food in pantries and wallpaper. Silverfish leave small holes in materials they bite and may also cause yellow staining.