When opposing Pok&eacute;mon switch in they are hurt by Stealth Rock with the amount of damage varying by the opponent&#39;s <a href="http://pldh.net/guides/typechart" class="linksred">Type Weakness</a> to the <a href="http://pldh.net/dex/type/rock"><img src="http://media.pldh.net/types/rock.png" alt="rock" /></a> type.<br /><strong>Weakness = %HP Loss</strong><br />4x Resist = 3.125% HP<br />2x Resist = 6.25% HP<br />Neutral = 12.5% HP<br />2x Weak = 25% HP<br />4x Weak = 50% HP<br /><br />Pok&eacute;mon with the ability <a href="http://pldh.net/dex/ability/magicguard" class="linksred">Magic Guard</a> ignore the effects of Stealth Rock.<br  />Stealth Rock can be removed by using <a href="http://pldh.net/dex/move/rapidspin" class="linksred">Rapid Spin</a>.