Most people who would purchase these types of products already by from others. You would need to create something new that they can't get elsewhere. The other way to do it if you really want to do that is to offer the same products for a lower price.
Cleaning as an occupation, is along the same lines as funeral directing. While there are people on the planet, they will always be messy, and they will always die. Therefore this would be a commercially viable occupation.
Selling commercial cleaning products can be profiable but you must consider the cost of the products, ability to store products, and finding clients to purchase your products.
Yes, that is a great small business that you can begin with little start-up costs. Know your products well and pricing. Talk to your local Chamber of Commerce and see if you can attend some of their meetings to talk with other businesses.