- The pitcher you mixed it in - there is likely to be several drops left behind. Be sure to rinse it out well. Just plain water works fine.
- Same with the spoon you used to stir the lye - rinse it well.
- Anywhere else the lye may have trailed to. Your gloves? Your thermometer? Be careful that a little stray drop of lye...or granule of powdered lye isn't "lye-ing" in wait for you.
There are a few traditional ways to deal with the raw leftover soap.
- First and foremost, be sure to scrape most all of the soap out of the pot and into your mold(s) with a rubber spatula. Less waste...less to clean up.
- Then, you can wipe the pot out with paper towels and throw them away. This will get the pot clean enough to wash with water, put in the dishwasher, or just leave it until your next batch.
- If you don't want to deal with the paper towels and wiping, you can use a LOT of hot water and soap and wash it down the drain. The slight risk there is that the oils and lye are not quite soap just yet...so it's possible that some of it could stick in your drain. I've never had this happen, but it's possible.
- If you can tolerate leaving some mess until later, you can just put your stick blender and all your spoons and such that have the raw soap on them into the pot, or into a safe container, cover it up with a towel or lid, and just leave it all overnight. In the morning, or next day...the oils and lye WILL be soap...and you can just clean it up in the sink super easily...with no risk to the drain. I also know people who use cotton "shop" towels for cleanup and leave them overnight. The next day, they throw the towels, now with real soap on them, into the washing machine.