Profile photos are an important part of creating trust between yourself and other users on site. By uploading a profile photo you are putting a face to your name and showing others that you are invested in your search. Uploading a profile photo means that you are taking the time to add more personality to your listing, and as such, may see better results.
If you have a business photo or photo you use throughout your social media accounts, feel free to use that as a way to advertise your services.
If you do not have your own images or prefer not to show your face online, feel free to add stock images from Google, that are related to housekeeping the services you provide. You can also create your own images, or add a photo of your business card.
Note: Remember, photos must not display personal contact information as this will cause your profile to be flagged.