today we're trained in some further roxas from the motorcycle section Cleveland Durham in the use of off-road motorcycles so that we will be able to patrol the communities of Durham the illegal riders generally rely on the fact that they they can be anonymous they can have helmets and masks on and in some cases actually ride very close and passed off police officers this is the selected DNA spray that's been rolled out across the Durham police force area can be deployed by the officers on patrol it can be sprayed on the rider the Self's the bike and then you clothe him it stays on for many weeks if we encounter the offender someone's brought into a police station where we have ultraviolet lights or we recover a motorcycle or clothing using an ultraviolet light we can detect the spots of the actual spray and we will be able to get the unique serial number from from the sample which will relate to a particular individual spray the neighborhood teams and response teams and the bike section have been trained in the use of the spray and it will be carried with the officers in the communities it's one of a number of tactical options that we can use to target the illegal use of off-road and bikes which does harm the communities of Durham it's not in any way harmful or noxious it doesn't cause any irritation essentially it's water but within that is the DNA serial number [Music] you