UNDATED - Choose your Halloween costumes wisely and avoid fire dangers.

The Minnesota Department of Public Safety says fires caused by open flames increase by 50 percent during the three day period around Halloween.

The widespread use of decorative dried flowers, cornstalks, paper bags, and candles are the main reasons.

A few tips: look for labels that say costumes are made of flame-resistant materials, avoid loose-fitting flowing costumes, supervise children as they go trick-or-treating, and when you decorate for Halloween use battery-operated or electric lights rather than candles.