About ten years ago, DH moved his office into its current location, and he's been using the same cleaning service since we moved in. They cleaned the office four evenings each week, and they were cheap. (DH and I are selectively cheap.)
Anyway, we hit a couple of rough spots along the way. One evening, for example, DH needed to access the office computer from home. When we logged into the office server, we got a rude surprise--suddenly we found ourselves right in the middle of a porn site! I sent a rather terse message and then I closed out the page. Although DH spoke to the cleaning crew, we never found out for certain who was surfing on the X-rated sites.
We added a login password so we didn't have to worry about that anymore.
Every now and then, someone would notice that an item was missing. We had some rather serious shrinkage a few years back, and we started leaving notes like "Please don't steal this." But, again, they were cheap.
Two weeks ago, we went to our local giant warehouse store and replenished the office and kitchen supplies. Well, when you shop at the local giant warehouse, you get your items in gigantic packages that last you 6-8 months or so.
Within a couple of days, though, we noticed that our gigantic package of brightly colored plastic cups, along with a huge box of forks and a couple of other items, had disappeared. This was very disappointing for a couple of reasons, one of which was that the brightly colored cups had made us very happy. Just that day, I had chosen a lovely purple cup that complimented my outfit.
DH spoke to the cleaning crew, and they adamantly denied that they had used us as a sort of Sunday Dinner supplier for their church picnic.
The following day, we came in and found a knife stuck in one of our apples. In addition to that, there was a knife protruding from the wall in the kitchen. Well, we can put up with porn and theft and dust bunnies, but when you start attacking a poor, defenseless building, we draw the line.
I mean, cheap can only take you so far.