This paper presents a research-through-design exploring interaction as a dialog between the user and the product that is in contact for sharing something, typically quantitative and/or qualitative information (e.g., data, points of view, feelings, and so on). This exchange is made possible by the implementation of a given kind of common language. Traditionally, human-computer interaction relies on an explicit, codified language, as for example when designers use icons, text, or pictures to convey a message. In contrast, we define empirical sensory language as those sensory stimuli coming from an artifact, processed most often unconsciously, which play a constructive role in generating a meaningful interactive experience, yet do not require any explicit exchange of information messages. Our investigation aimed at exploring potentialities and limits of applying a sensory language to arouse meaningful interactions leading to a desired change in routine behaviors. We thus designed two product prototypes intended to lead users to decrease water consumption. Our approach opens up a new space for design that is currently not covered by explicit, codified forms of interaction. We discuss implications for a product designer to design for a sensory language and the results of an exploratory user evaluation.