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So far I only went to the library when I really needed to (research, paper writing). However, I was studying at home because of the noise in the library. Since I started using earplugs, I can also study in the library and I am more efficient and focused than at home. However, there are still disadvantages to the earplugs: I had to readjust them more often to find the perfect position (i.e. to position them so that I no longer hear any noise). They were not very hygienic, but buying new ones every day was out of the question (a five-day week would have cost €10 just for this). It would also have produced a lot of garbage, because the earplugs were packed in plastic boxes. Since then I have been using the reusable BOLLSEN Life+, earplugs, the same pair every day. After each use, I cleaned them with soap and water and they were like new. I no longer have to spend money on disposable earplugs every day.