As far as I know, the manufacturers always send a GAS label with a new toner module for recycling.
Optionally, simply send the used toner to the manufacturer. Unfortunately, I don't know if Digitec will take the toners back.
TN-1050 cartridge purchased as a spare cartridge for HL-1210 printer, as the packaging lists the MFC-1810 as a Brother printer that uses this type of toner.