Pros - These are very similar to real eggs in size, color, weight and texture. Easy to clean with soap and water, and they don't split like some wood eggs do.
Cons - none
These work great as fake eggs for broody hens, and to show pullets where to lay eggs. They clean up nicely with soap and water, and don't split along the grain like some wood eggs do. They look so similar to real eggs, it's helpful to mark the ends with a Sharpie!