Typical costs: 1  Replacing aging, leaking or inadequate ductwork typically costs about $35-$55 a linear foot for labor and materials, or $1,000-$5,000 or more for a single-family home, depending on the length and type of ducts used (sheet metal, fiberduct or round flexible ductwork) and local rates.
Not Veterinary Advice: No. A snail is not meant to shed or molt its shell and snails normally will not shed their shells. However, it can happen by accident, which usually leads to the snail dying.It's thought to be possible that some snails could live without their shells, until they form a new one, but this is considered unlikely.Snails are unable to reattach to their shells if they become separated, but it may still be possible for them to use the shell as shelter temporarily.owever, it can happen by accident, which usually leads to the snail dying. It's thought to be possible that some snails could live without their shells, until they form a new one, but this is considered unlikely.
Both slugs and snails are gastropods and belong to phylum Mollusca. Both have soft bodies with a muscular foot. Both slugs and snails are similar in many respects but with only a few differences. One of the noticeable differences is that snails have a shell on their backs whereas slugs do not have shells. The shell is coiled and about one to one and one-half inches long. Both slugs and snails have either a dark green, tan, light gray, or black body. Some of the varieties have patterns or spots on their bodies.