How to Use "cull" with Example Sentences

1. Whenever possible , cull whatever is not working .
2. Criminal gangs using sophisticated viruses cull credit-card and other sensitive data to steal from bank accounts .
3. But it would make economic sense to stop the cull .
4. Many subsidies undeservedly survived the cull .
5. Everyone expected a cull but it was slow in coming , partly because marginal shops held on by dodging tax .