Series: Yukkuris Came and Grew On Their Own / ゆっくりがかってにはえてくるわけ。 (big.g)

http://www.pixiv.net/member_illust.php?mode=medium&illust_id=60263249
Part1: A nicehead pet koAlice is tormented by shithead house yukkuris and unfortunately the owner only found out about it when it's too late
Part2: The house yukkuris get exterminated, features a crossover with aglet with his exterminator anon making an appearance.
(warning: part1 is very anger inducing and imo the revenge extermination in part2 isn't satisfying enough to make up for it)