Freezing butter is such a great tip! Thanks.
I'm not a fan of the taste of canola oil but there are lots of food products that are used for both food and cleaning so that doesn't always scare me, lots of food products are used in natural cleansers, I use an orange spray to keep fleas off young pups. Lemons take lots of stains out of clothing and lemon oil wipes off mineral deposits off of shower doors and bathroom tile without any effort. Lemons also clean and shine brass (where ketchup will shine copper, vodka cleans chrome) and boiled in a coffee mug with water will melt down crud in microwave so you can just rinse the dried on good off. Salt sprinkled and scrubbed with a half lemon and sit over night will take stains out of butcherblock and the same mix will lift crud off cast iron frying pan that is stuck on. We use vinegar and water to wash windows, it doesn't damage the UV properties of newer windows and also kills weeds, just takes a day or two over chemicals, me being a germaphobic it also is a disinfectant killing bacteria. An onion will also effortlessly remove the grim that builds up on windows over the winter months. Hard water rust streaks can be removed with a peeled potato and banana peel makes your silverware shine again. Walnuts will hide scratches on wood floors and furniture. Powdered lemon or orange mix cleans a ceramic dishwasher was well as a chemical cleaner. Get grease on your clothes many time letting corn meal sit on it for an hour soaks out the grease. Cucumber (skin part) will remove marks from painted walls and back to where we started olive oil is good at getting sap off of stuff.