I use a Bifenthrin product like this bifen one oz per gallon spray the foundation behind whatever appliance they are near. It is safe for kitchen use if directions are followed. Usually, it takes 2 or 3 days to work
I would recommend better containers Hammont Clear Acrylic Boxes - 8 Pack - 3.75”x3.75”x2.5" - Small Lucite Boxes for Gifts, Weddings, Party Favors, Treats, Candies & Accessories, Plastic Storage Boxes https://www.amazon.com/dp/B08NSKWP9T/ref=cm_sw_r_cp_api_glt_fabc_BK716ZNSN7HQJ181XJ8K?_encoding=UTF8&psc=1