HI, i m new here.. i need some prof. advise. lately i renovated the house.. i didn;t realise this problem until lately i keep finding croaches & ants around my kitchen cabinet. We hardly cook and always keep the kitchen clean up.. One day.. i bent down to trace the croaches ...i found tat my kitchen cabinet and the slab (i tik is called)... has a gap... and the croaches jz crawl in there.. i was surpised. I tot the kitchen cabinet should b[e 100% sit on the slab. This slab was newly erected. Attached isthe photo i took.. Can any prof. advise me.