Based on the context and the answer, generate a question. 

Context: Last night proved to be a very costly and inefficient mousing night . I got glue traps this time , since Walmart was reorganizing and did n't have any of the cool and inexpensive mouse cubes that Julie was mentioning . So these are about $ 4 for 4 of them .

Answer:

Glue traps are extremely cruel



Why might people really disapprove of this ?