WASHINGTON - The most frightful things awaiting trick-or-treaters on Halloween are accidents that could put children in emergency rooms, the government warns.

The Consumer Product Safety Commission has issued its annual tips for keeping children safe:

Get costumes, masks, beards and wigs made of flame-resistant fabrics such as nylon or polyester, or look for the label "Flame-Resistant." Avoid costumes made with flimsy materials, big baggy sleeves or skirts that could fall upon open flames.

Make sure costumes and bags are bright and easily visible to motorists. Add reflective tape that will glow in a car's headlights. Have children carry flashlights.

Costumes should not drag on the ground and shoes should fit well - no oversized high heels. Accessories such as swords or knives should be made of soft, flexible material.

Masks, hats and scarves should fit well and provide adequate ventilation without obstructing vision.

Children should not eat any treats before an adult has examined them for evidence of tampering.

Make sure toys received by young trick-or-treaters are not small enough - and do not have components small enough - to present a choking hazard.

Familiarize yourself with the Heimlich maneuver.

Keep candles and jack-o'-lanterns away from curtains, decorations and the path of trick-or-treaters.

Make sure lights have been tested for safety; discard damaged sets and don't overload extension cords.

An adult or older sibling should accompany trick-or-treaters.

Trick-or-treat only in familiar neighborhoods.

Make sure your child has some sort of identification with him, or mark his costume with his name, address and telephone number.

If you're driving, keep your car stereo volume low. Most drivers hear children before they see them.