Make them payback...
Let their wet clothes remain wet and keep dripping even after hanging out for 1 week!
an eye for an eye, water for water... haha...
http://www.hasbro.com/supersoaker/ya same problem here, went up to talk to them and still got the cheek to say its not them. but after that can pull their washing back in...but only for that day. so now either have to wake up earlier to hang the clothes out or have to wait for thier clothes to drip dry b4 hanging mine out! so bloody inconsiderate! my is at blk 172C and more than 1 floor is doing that!