Kept 'em for hours, bordering on days, in iced water and aerate consistently. When ice melts have kept aeration going and had them slimy nasty critters last a week, flushed with fresh water at least twice a day. I know they're great striper bait but they're still some nasty, slimy, slithery, evil little critters. [grin]
I START TO CATCH THEM THIS TIME OF YEAR TO USE THEM IN NOV. AND DEC. ALL I DO IS PUT THEM IN A LARGE MINNOW TRAP WITH THE HOLES CLOSED. I HAVE A FRESH WATER POND ON MY PROPERTY AND I JUST KEEP THEM IN THERE FOR EASY ACCESS. JUST BUST A CRAB UP EVERY ONCE IN AWHILE AND FEED THEM. I WAS SURPRISED THAT I HAVE HAD SUCH GOOD SUCCESS IN FRESH WATER BUT THEY CAN LIVE IN BOTH.