Help, a friend came over and washed a bunch of steak grease down my kitchen drain now it appears that I have a clog. Grey water is backing up into the bathroom sink. Three pots of boiling water down the kitchen sink has helped kitchen drain but grey water is still backing up into the bathroom sink. This is a 2009 Sunseeker MH.
Can I use a drain chemical? I bought some. I'm not sure I have many choices at this juncture. We are camping pretty far from any major city, 10 miles to a very small town.
I am hooked up to sewer and have emptied both tanks.