My N. Florida home was built in the 60's with cast Iron pipes. In the past 2 years I have had to call a plumber 5 different times to come and clear the drain connecting my kitchen sink and my laundry room due to extremely slow/ no drainage. Nothing else is effected when this problem occurs. I've tried different companies that have tried different techniques and given me different reasons for my reoccurring problem. Some say it is the grease I pour down the sink (I try to avoid this so I disagree) Some say it is the powdered laundry detergent I use. One even suggested I illegally drain my laundry in my backyard. The crawlspace is too small to really check out the pipes in this area. The entire floor is covered with beautiful tile and the pipe is a 2" pipe (too small for a camera). HELP what can I do? Should I purchase my own 100' snake?