Clinkis that's really got to hurt. Our washer has a rinse drain and spin cycle that I always run prior to throwing the filters in. I have my filters sitting in a pail of hot water for about an hour to slip all the niter off first. Dump that in the yard beside the barn, cows love to lick it up. Dumped it down the toilet one night, too tired to go up to the barn, BIG MISTAKE, niter doesn't really flush very well, especially in cold water.