Definitely don’t put grease or oil down the drain if it is solid at room temperature. Even oil that’s liquid at room temperature is bad for sewage systems - they combine with non-biodegradable sewage waste such as wet-wipes (Don’t flush wet wipes down the toilet. Put them in the trash.) and turn into rocks that narrow and block the sewage pipes. See wiki on Fatbergs https://en.m.wikipedia.org/wiki/Fatberg
Definitely don’t put grease or oil down the drain if it is solid at room temperature. Even oil that’s liquid at room temperature is bad for sewage systems - they combine with non-biodegradable sewage waste such as wet-wipes (Don’t flush wet wipes down the toilet. Put them in the trash.) and turn into rocks that narrow and block the sewage pipes. See wiki on Fatbergs https://en.m.wikipedia.org/wiki/Fatberg