[swagasaurus-rex]

Feeling guilty about bugs sounds appropriate.

In the sense that you care about the product.

Some people don't, they're there for the paycheck and don't uphold their end of the employment bargain. Or justify it by saying they're "too busy".

Some people might not litter on purpose, but occasionally something falls out of their car or bag, and they say, "Oops. Can't be bothered. It goes against the principle of leaving things better than how you found it.