IF I DON'T GET MY AVON BROCHURES BACK, SHOULD I PERSONALLY KNOCK ON THE PEOPLE'S HOUSES TO GET THEM BACK??

I AM AN AVON SALES REPRESENTATIVE. I GAVE OUR BROCHURES AND UT THEM ON LETTER BOXES. AND SAID I'D PICK IT UP IN THE DUE DATE I WROTE. IF I DON'T FIND MY AVON BROCHURES WHEN I GO TO PICK IT UP ON THEIR LETTER BOXES, SHOULD I KNOCK ON PEOPLE'S HOUSES TO GET IT BACK? I'M NERVOUS AND SHY ABOUT DOING THAT. HELP???