When my daughter got gum in her waist length hair I used oil to get it out. I soaked the hair in oil (around the gum) and then pick it out a little at a time. It took ages, but it works. I've also used an ice cube to freeze the gum and break it off in little pieces, but I don't know if a ferret would tolerate this. Shelley [Posted in FML issue 4254]