If you do not have yet a sustainable procurement policy, see above solution "Set up a Green Procurement Policy" on how to implement one and our sustainable procurement page on how to write one.
For services, prefer providers conscious of environmental and social challenges:
Green Cleaners Asia is an eco-friendly professional cleaning service in Singapore. Since 2009, they have been using non-toxic and environmentally friendly products - not polluting the environment or your indoor air.
A toxic free working environment contributes to improving productivity levels at work, reducing sick days and operational costs!Their corporate clients include kindergartens, offices, gymnasiums and hotels.
GCA actively raise awareness and encourage their customers to adopt a ‘greener’ lifestyle, across their social media platforms and through educational talks and events.