make clean vs find work dir and delete

[Mayuresh <mayuresh%acm.org@localhost>]

If I wish to clean pkgsrc area, typically to conserve disk space, I run
something like this.

# find /usr/pkgsrc -type d -name work -exec rm -rf {} \;

Instead if I do "make clean" in /usr/pkgsrc, which sounds more appropriate
method, it takes much longer.

I am curious what pkgsrc users would do for above scenario. Or is there
any way to achieve the result faster.

Mayuresh