If the instructions had been followed exactly, they would have worked effectively. Please let me know if you'd like a replacement pack or further assistance by replying to my private message. I'm here to help Wees attend: De 3M Dual Lock is in totaal 2 meter, dit kan zijn efficiã«nt https://vuf.minagricultura.gov.co/Lists/Informacin%20Servicios%20Web/DispForm.aspx?ID=9995238