They just don't have enough clients here in the States.
No one will contact you in regards to previously mentioned.
You can go weeks without getting a client.
Clients can say virtually anything about you, it will result in a negative mark against you and they get a free cleaning out of it.
So guess what the unscrupulous client is going to do?
you pick where you want to work, you get your pay early.
Cons
only few shifts, you are lucky if you get up to 10 shifts in a week, they can cancel your shift at the last minute without explanation. the hours in a shift are short.