DRUGS worth more than £1m have been seized from West Yorkshire's streets so far this year following phone calls to Crimestoppers.
And the anonymous tip-offs have also led to stolen property valued at almost £800,000 being recovered.
The number of calls to the charity has led to a massive rise in arrests.
There have been 500 arrests so far this year. Of these, 320 people have been charged with drug trafficking, 15 with burglaries, 10 with serious assaults and 50 with theft.
Several graffiti taggers have been charged with criminal damage and a number of people charged with drinking and driving.
Yorkshire and the Humber Crimestoppers co-ordinator Detective Sergeant Ian Froggett said: "This has been a tremendous year so far, with our arrests being almost 300% up on only three years ago.
"This couldn't be achieved without the fantastic support from anonymous members of the public.
"There is so much information out on the streets and so many people don't speak to the police, either because they don't want to get involved or think the police already know.
"I ask people to be a little patient for results, as the police have to do considerable work to turn the anonymous information into a search warrant or whatever is required to make the arrest.
"Our promise to everybody who calls us is that nobody will know they've phoned unless they tell them.
"One call recently led to the seizure of drugs with a street value of over £200,000.
"If we continue to get information like that we can seriously disrupt the drugs market and make the future brighter and safer for our young ones.
"Make it a rotten Christmas for burglars, thieves, handlers and robbers. They wouldn't think twice about spoiling yours!"
Calls to Crimestoppers are never traced, they aren't on itemised phone bills and callers are never asked for their names. The number is 0800 555 111.