Edited to add: follow the instructions. We just put it down once and it did the job - BH! Hatzlacha!
We used the advion bait station (https://www.amazon.com/gp/product/B08HWHD58L/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) and it didn't work. We actually saw that some of the poison was "eaten" but still saw roaches after.
