Hello; Handcleaner and a toothbrush, takes about 10 minutes. About the (relative) toxicity of antifreeze; I was a mechanic in a logging type situation, it was common practise to taste the leak to know what the fluid was. I don't know exactly how much antifreeze I "tasted" over the years, I don't recall any side effects. not to mention 90 weight,ATF,15-40, and maybe even a little battery acid. I guess that dates me.