In cryptocurrency markets, dust is a reference to a fraction of a cryptocurrency token that is small to a point where it cannot be traded. As such, most crypto dust ends up idle within many exchange wallets. When it comes to getting rid of the crypto dust, this is largely dependent on the policies of the exchange where this dust has been piling up. A majority of cryptocurrency exchanges will do little to nothing to address this issue due to the fact that they have minimum trade size requirements, such as 0.0001 of a specific token, or have a minimum withdrawal value that is required in order to cover the transaction cost. However, there are ways through which you could resolve this issue, such as topping up your dust to the point where it meets the exchange's minimum withdrawal value requirement, after which you can easily transfer your smaller holdings to an exchange and then use the available crypto dust cleaning features. Then all that's left for you to do is to withdraw the funds to your bank account.