I hate when there is a clog in a sink. I used to take Chinese Cooking in my school in 7th grade, and at the end of the day, the teacher told me why the sink was backing up so much. I looked in the clear piping, and in the trap, was a huge heaping pile of DIRT. SO What I did was got a plastic shopping bag, and a chopstick and opened up the cap. Then, underneath the cap was a rubber cork. I pulled the cork out, and nothing happened. So, I used the chopstick and I poked the clod of dirt in the trap. It was stuck, so I used some elbow grease and forced the chopstick in and bending it and twisting it until some of the dirt came into the bucket below. Then, I twisted the chopstick more and water POURED out of the trap hole, and it got all over the bag, and seeped through the holes and it was all over my hand. Feeling VERY sick, I plugged the cork back into the trap and put the cap back on. I washed my hands so much, they were pruned after. I hope I never have to do that again or I may get sick.