When used on <a href="http://pldh.net/dex/monster/sudowoodo" class="linksred">Sudowoodo</a> in HeartGold/SoulSilver it will attack and, once captured/defeated allow passage through Rt. 36. It can also be used to water berries planted in the <a href="http://pldh.net/dex/item/berrypots" class="linksred">Berry Pots</a>..