喵妈喵爸们:有人知道modkat litter box吗?好用不好用?值不值180的高价呀? 有点种草,但是价钱实在是很贵啊。有人用过吗? http://www.amazon.com/Modko-74183-Modkat-Litter-White/dp/B004DBNGU8