There are a few things you should consider when choosing the right commercial cleaning company for your business.

1. Make sure they have references. A good reliable company should have a few references from clients.
2. Make sure they have insurance. You may not realize it but if one of their workers injure themselves on you property and the company has no insurance you may be liable.
3. Check how much experience they have.
4. Lowest price is not always the best. Do your due diligence.

For a full step by guide please check commercial cleaning services