Delete rows based on a condition

Is it posibile to make a macro that automaticaly delete rows based ona a condition. Condition is to delete rows that have B column value "" or zero. For example:

....A B C .....
1. 1 2 5
2. 2
3. 3 4
4. 6
5. 5 7

Rows that has to be deleted are 2 and 4.
Thanks in advance.