Toronto police say they have shut down a rash of crack houses and grow operations through a series of raids in the Keele-Eglinton and Jane-Finch neighbourhoods.

Police say the Project Spring Clean raids, which took place this week, saw more than 400 charges laid against 120 people. One-third of the arrested parties were under prohibition for firearms and one-quarter were on bail at the time of their arrest, police say.

A dozen crack houses and 16 marijuana grow operations were shut down and police say they took various amounts of cocaine, crack, heroin, ecstasy and marijuana off the street.

Drug, intelligence and gangs and guns officers were involved in the raids, as were members from 12 and 31 Divisions.

For the next 15 weeks, police say 75 officers will be patrolling the areas where the raids took place.