Hint: They're not fats and oils!

Add Yahoo as a preferred source to see more of our stories on Google. Plumbing and wastewater treatment professionals weigh in on how to protect and prolong your appliance In one test, CR engineers ...

I'm never quite sure what's OK to toss in the garbage disposal. Those whirring and grinding noises make it seem like it could chew up anything, but some items can cause serious problems. I've learned ...