I Think The Maids Are Thieves

I am pretty sure the maids that we hire at my company are stealing my stuff. I mean stealing my stuff, not my stuff that belongs to the company, stuff I bought. Food I bought. I am noticing that my Balance Bars are dwindling faster than the rate I am eating them. AND the other day, my chip bag was lower. Yea, exactly. They stacked on some of my Ranch Doritos. Where is anti-chip-thief technology???