I am a knitter. It sounds odd to say that as I've only been knitting for two years and my mind defaults to the old thought that "I could never learn to do that".
In late September I spotted two carpet beetle larvae in a skein of white mohair wool yarn. I freaked out. I had to spend many hours doing a process to try to kill any possible eggs or other larvae that might be in the yarn. (Carpet beetle larvae eat any kind of fiber not just wool and they also eat through plastic bags so keeping them out can be tricky. I found them eating the wallpaper custom made by the former homeowner which is silk fabric made into wallpaper and they also were on the couches with cotton upholstery and on the wool embroidered rug!)
To save the yarn involves taking all the yarn in the house and doing a rotation in the freezer and back out again, then repeating it again. I also did a thorough cleaning and decluttering in the upstairs rooms of the house where more larvae (tiny caterpillars) were found. This took about three full days which was hard to scrape together in our busy fall which had at least two appointments, seven days a week, and included five full days outside the house from breakfast until after dinner.