Just ok
Brands do, in general, try to sell their product as the best one out there. That's kind of the whole point with ads and marketing – you want to convince people yours is the best out there. Not this cleaning spray, though.
Someone should definitely tell the people behind this product that despite humility being a great attribute, this is not the way to communicate it for a company. Saying your products are just "ok" is not a convincing selling point.
