Where I live, you typically share house cleaners with your neighbors or family members.

My parents, aunt/uncle, grandparents, and one of my neighbors uses the same house cleaner.

If she stole from me, I’d immediately tell my family and she would lose basically all of her clients.

That makes it easier for me to trust her.

(It works similarly in NYC apartment buildings - a single cleaner often services many people in the same building, so they have a reputation to uphold)

I would never use random online cleaning services.