<p>Do you mean the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Yeti">Yeti</a> raids in <a rel="nofollow" href="https://tibia.fandom.com/wiki/Folda">Folda</a> and <a rel="nofollow" href="https://tibia.fandom.com/wiki/Chyllfroest">Chyllfroest</a>? Those are <a rel="nofollow" href="https://tibia.fandom.com/wiki/Raid">raids</a> and as all other raids they cannot be blocked.</p><p>However, if you mean the ordinary spawn of Yetis in the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Isle_of_Merriment">Isle of Merriment</a>, yes, it can be blocked. The respawn time was When I camped there, I had to wait the respawn time of about 5 minutes in (in an empty test server.</p>server) away from the spawn place. It wouldn't respawn if I stayed close to it.</p>