Goblins and ghouls, princesses, fairies and superheroes will walk the streets throughout the Halloween weekend with trick-or-treat hours on Saturday in Port Washington and Sunday in Saukville. 

City-wide trick-or-treating will take place from 4 to 7 p.m. Oct. 27 in Port and from 4 to 7 p.m. Oct. 28 in Saukville.

And before you send your little ones to collect their goodies, here are some trick-or-treating safety guidelines from the U.S. Food and Drug Administration:

• Wear costumes made of fire-retardant materials; look for “flame resistant” on the label.
• Wear bright, reflective costumes or add strips of reflective tape so you’ll be more visible.
• Wear makeup and hats rather than masks that can obscure your vision.
• Test the makeup you plan to use by putting a small amount on the arm of the person who will be wearing it a couple of days in advance. If a rash, redness, swelling, or other signs of irritation develop where the makeup was applied, that's a sign of a possible allergy.
• Check FDA’s list of color additives to see if makeup additives are FDA approved. If they aren’t approved for their intended use, don’t use it.
• Don’t wear decorative contact lenses unless you have seen an eye care professional and gotten a proper lens fitting and instructions for using the lenses.
• Don’t eat candy until it has been inspected at home.
• Trick-or-treaters should eat a snack before heading out, so they won’t be tempted to nibble on treats that haven’t been inspected.
• Tell children not to accept—or eat—anything that isn’t commercially wrapped

Here are some more Halloween tips from the FDA, and here are a few more from the Mayo Clinic.