Advice on what to do next?

I don't really know how to start this as I am absolutely exhausted!!

To make a long story short, German Roaches infested some pallets my husband and I had outside of our RV. We have bad those pallets for a couple years now but only this summer did it become a problem. We have tried many things except Alpine and I'm wondering if I should bite the bullet on getting it.

So far we have used 3 hot shot foggers two times (once for 2 hours with a 2 hour air out, and another for around 7-ish hours with a 3 hour air out), got Bengal Insecticide and sprayed it in all nooks and crannies we found, and have now set out Hot Shot gel bait traps.

The second bombing + Bengal spray seemed to have worked for a day or so, but I started seeing nymphs again the other night and tonight I saw what looked like a bigger nymph and a grown female (but couldn't get to her due to not having spray). Should I just be more patient with the bait traps (have been out for about 3-ish days) or should is start looking into another bait/treatment?

Idk if it's important information but we also have cats!