Although I feel like the 4-lb lard buckets are too flimsy (thin & easily bendable, plus useless handle for lifting/carrying liquid soap), they are pretty good for temporary use.
I discovered this on my recent road trip, when I decided to buy a bucket and use some lard in the soaps I was making. (Yes, I am still a vegetarian, don't judge me! :think

After reading the recycle number on the bottom, I decided to give it a try as on of my soaping containers. It works, but I tossed it before coming home, because I prefer something sturdier for mixing my soap batter.
But in a pinch, it worked fine with cautious handling.