It's always a good time to clean those instruments. Brass instruments need a bath, woodwinds can clean their mouthpieces with soap and water and everyone can take a soft cloth and wipe off fingerprints. See my website for detailed instructions - NEVER put a woodwind instrument (flute, clarinet, saxophone, oboe, etc) in water - NEVER EVER! Brass instruments (trumpet, trombone, baritone, tuba) water cannot hurt it - it will not rust. Give them a bath.