Spotting

uh oh.....
"Silverfish consume matter that contains polysaccharides, such as starches and dextrin in adhesives.[4] These include glue, book bindings, plaster, some paints, paper, photos, sugar, coffee, hair, carpet, clothing and dandruff. Silverfish can also cause damage to tapestries. Other substances that may be eaten include cotton, linen, silk, synthetic fibres and dead insects or even its own exuvia (moulted exoskeleton). During famine, a silverfish may even attack leatherware and synthetic fabrics. Silverfish can live for a year or more without eating.[2][4]
Silverfish are considered a household pest, due to their consumption and destruction of property.[2] Although they are responsible for the contamination of food and other types of damage, they do not transmit disease."

:/ bad news if it's found inside