Offical DEFRA advice is to peel carrots as the skin absorbs organo phosphates and nasties. Therefore I only buy organic carrots. As Toddy says, they don't keep in the bag due to the "Washing" - even organic ones. The trick is to take them out of the bag, let them air dry then cut the damp green end off. Then they'll last the best part of a week or more in a dry cupboard or veg basket. I tend to just scrub them clean before eating/cooking until near the end of the week, when they need peeling/odd manky bits cut out.
