I have had problems getting the spigot clean after use. After 3 weeks or so, it has become stuck and refuses to turn. So, I break off the handle.
I may have found a solution. After use, I rinse the spigot well. Then while closed, I put several drops of glycerine in it from the inside of the bucket. Work the spigot a few times to spread it around.
A quick rinse when I use it again and all is well.