[Dovecot] LDA + sieve +Maildir?

I have a working Dovecot + LDA + Maildir setup and am looking to implement sieve with it. The examples that I have seen seem to be for mbox. Does sieve work with maildir?

Looking to move mails marked as spam to a spam folder. Also we have a feature we offer to send spam to a different account in the domain. Could this also be done with sieve?