Check D:\ for files named *.tdarrcache. If they are over 2 days old from the time they were created, delete them.

import os
import time

def file_age_in_seconds(pathname):
    return time.time() - os.stat(pathname).st_ctime

for pathname in os.listdir('D:'):
    if pathname.endswith(".tdarrcache"):
        full_pathname = os.path.join('D:', pathname)
        file_age = file_age_in_seconds(full_pathname)
        if file_age > 172800:
            os.remove(full_pathname)