Do you ever try to wash a mug only to be confronted by tea stains that just won鈥檛 budge? A little bit of chemistry may be just what you need to get your mugs back to white....
鈥淒og Rocks鈥� are supposed to solve the problem of grass dying from dog pee. Urine contains a variety of nitrogen compounds, mostly metabolites of protein in food. These are effective fertilizers,...
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