This is a totally unanswerable question unless you specify the location, the level at which you are hobbying at, and the business. Even a state by state analysis is useless. Stings usually get set up by local LE, not the State Police, so you are at the mercy of the municipal LE and the politics of that particular town. If you don't know what the politics are in that town, you assume the risk.
It is generally a bad idea to be hobbying within a month of municipal elections because there are crackdowns and sweeps to make elected officials look like law-enforcers. They pick on easy targets: usually SWs and their clients are the easiest targets.
At the higher end of the hobbying spectrum business that operate incalls discreetly can do so for many years and never be touched by LE. The main things they focus on are: discreet location in a commercial area with a landlord willing to bend rules for steady rents, and other tenants who either operate similar or quasi-legal, borderline legitimate businesses, or else they don't care; and donations to police charities which are a legal form of bribing LE. Doing these things can create long term immunity to getting busted, and the smarter business owners figure these things out. Discretion and low profile are very important, and these businesses erect models that build through word of mouth and referrals. You need to know whether you are dealing with such a business or not. There are some businesses operating incall MPs with extras in NYC, that have been in business 10 plus years and never got busted because they did all these things. The landlord willing to bend rules is the most important key, but from what one incall MP business owner told me, the other side of that equation is that the landlord that bends rules ain't going to come running to fix the AC when its broke. So the incall tenant needs to be handy or have their own person on staff who is a fix-it person.
Reliable websites that tell you about dangers are usually the local ones. In the NYC area for example, it would be BestGFE.com. Usually when there are stings in New Jersey or CT that is the place where you will find out.
Most stings happen with hotel incalls, because incalls operating there are easier sting targets. There was a sting in Paramus NJ last year and 3 operations were busted, all operating incalls in hotels. The problem is relying on young girls to behave themselves in their hotel room, not to smoke pot, not to play loud music or make noise, and not fight with a client or create a disturbance that draws attention to themselves. If you draw the attention of hotel guests to yourself, a complaint gets made, and then every hotel has surveillance video so at that point you are dead meat. First thing cops will do is grab the hotel's videotapes.