The Bin a Blade campaign has taken nearly 10,000 knives off the streets since 2011.
In the first seven months of 2013, 330 knives were collected in Bury St Edmunds compared to 383 in the whole of 2012 and 1,029 in 2011.
In the first year 6,125 blades were dumped in four static and two mobile bins and the campaign was so successful that the static bins, outside Bury St Edmunds, Mildenhall Ipswich and Lowestoft police stations were made permanent.
A further 2,205 blades were deposited in 2012 and from January to July, 1,594 more have been collected so 9,924 have now been shredded at Sackers Recycling in Great Blakenham.
In November 2012 the bins were re-launched with a new look by anti-knife campaigner Holly Watson and then Chief Constable Simon Ash.
Holly said: “It goes to show that a simple but effective initiative can be so successful.
“I would still encourage anyone that is carrying a knife to think twice and bin their blades, as soon as the knives are binned they are out of circulation.”
A You Tube film made by Suffolk Police last year as part of the campaign is now shown in the V&A Museum of Childhood.