Toronto police are warning the public to look through their children's Halloween candy carefully after dishwashing pods were discovered in some trick-or-treat bags.

Police say they had reports from families who were trick-or-treating near Prescott Avenue, Blackthorn Avenue, and Rockwell Avenue areas, close to the Corso Italia neighbourhood.

The pods are harmful if ingested. Police warn that detergent, even in small amounts, can be caustic and cause burns to the mouth and throat.

Police ask that anyone with information contact them at 416-808-1200.