I used Tempo dust on my holes in my siding.
Bayer Tempo 1% Dust (1.25 lbs) https://www.amazon.com/dp/B003ORZFJW/ref=cm_sw_r_cp_api_glt_fabc_Z2X8Z98GRA8BJD6NSQSF
With a duster.
HARRIS Diatomaceous Earth Powder Duster with 6 Inch Extension Nozzle https://www.amazon.com/dp/B01LRMN9ZM/ref=cm_sw_r_cp_api_glt_fabc_RK2MQY5SH3KP74G66JV1?_encoding=UTF8&psc=1
