Yeah the snail just makes its home in one spot. People don't like them bc they send out a mucus trail to get it's food and it bothers some corals. They can get out of hand with how fast the reproduce. So it's all up to you. The way I deal with them is if I see them I super glue the tube if I can take out the rock or whatever they are on. I haven't had any on something that I couldn't remove. Other people just break them off with a pair of tweezers.