I would highly recommend you pick up some Cimexa:
https://www.amazon.com/CimeXa-Insecticide-ounces-bottle-Rockwell/dp/B0085HRWI8
It is far, far more effective than DE.
Stop Bugging Me! 16 fl. oz.... https://www.amazon.com/dp/B01J3VO9QC?ref=ppx_pop_mob_ap_share
Rockwell Labs CXID032 Cimexa Dust... https://www.amazon.com/dp/B0085HRWI8?ref=ppx_pop_mob_ap_share
MGK 1852 Crossfire Concentrate... https://www.amazon.com/dp/B01NAE47Q0?ref=ppx_pop_mob_ap_share