We encourage you to read our recent publication entitled “Effectiveness of different types of hair traps for brown bear research and monitoring” and published in PLOS ONE. The study aimed at assessing the effectiveness of different types of hair traps, commonly used in bear research and monitoring. As a result, the authors recommend the use of beechwood tar hair traps baited in advance for optimal hair sampling in future studies.
Link to the article by Teresa Berezowska-Cnota, Ignacio Luque-Márquez, Isabel Elguero-Claramunt, Katarzyna Bojarska, Henryk Okarma and Nuria Selva http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0186605