The National Knife Amnesty campaign, which got underway on Wednesday, will be running un til June 30.
Dyfed Powys Police will be taking part in the amnesty, and will take a proactive approach through legislation, law enforcement, and working with communities to prevent knife crime.
During the campaign, people will have the opportunity to surrender knives, other weapons and bladed instruments. Carrying knives is illegal and won't be tolerated.
Knives and other weapons can be deposited in bins in the foyers of police stations, and there will be no need to provide personal details. To avoid prosecution, knives should be wrapped in cardboard or something similar and secured by tape before carrying them to an amnesty bin location. Carrying an offensive weapon is still an offence and those people surrendering the knives and other weapons must follow the above procedure.
Chief Inspector Nigel George, of the Communities and Partnerships department, said: "Carrying a knife is illegal. If you carry a knife for self-defence, remember that you also run the risk of having it turned on you. This is a chance for you to help prevent knife crime by surrendering knives and other bladed instruments without fear of prosecution."