Methanol is also poisonous and dangerous.

I have an old crock pot I purchased at the good will store for about $3.00 and drained my 64 chevelle engine of it's antifreeze one winter into the pot. Been using it for about 4 years now. It sits in the corner of the shop bench with the lid on it. I throw the parts in it and plug it in. Come back after several hours or even a day and pull the parts, rinse and blow dry or just wipe them down with some Corrosion X. Assemble the parts and you have what looks like a brand new engine. There is no scrubbing, rubbing, or working of the parts to get them free or clean. They just wipe clean. There is only one small production of acquiring the pot and it can be used for years on literally hundreds of engines. Put the lid on when not putting in or pulling out parts and there is no danger of little critters sipping the Koolaid. When the liquid level drops, add water or more antifreeze (it is usually the water that evaporates out)

I am sure that most of us have dangerous or poisonous stuff all around the shop just sitting there that we use from time to time and we continue to keep those things around for use at a later time. If it really is a concern, a hazardous warning sticker can be placed on the crock pot for safety's sake.