Sustainability is a word we have gotten more and more familiar with during the last few years. Adapting formulations to meet the market demand for more environmentally friendly products is challenging and requires the introduction of new technology. Presented is Exilva cellulose fibrils, a robust rheology modifier that can effectively improve spray cleaning formulations, and still being sustainable, biobased, biodegradable and microplastic free. High viscosity at rest can be developed, while remaining a free-flowing liquid upon application. The benefits of the rheology additive are improved anti-sagging and anti-dripping properties, compatibility with surfactants, even at high loading, stability in high salt concentrations and high ionic strength. The cellulose fibrils are stable in high and low pH. To demonstrate the benefits, acid cleaner formulations with phosphoric acid at pH 1 have been prepared. The effect of replacing another rheology additive with Exilva, the compatibility with surfactants, and performance on rusted tiles is demonstrated. The results show that sustainable solutions do not have to compromise performance.