Spirocyclic tetronic/tetramic acid (ketoenol) derivatives (SADs) such as spirotetramat, spirodiclofen and spiromesifen are one of the most recently developed and used acaricide/insecticide classes for the control of a wide spectrum of sucking insects in numerous agricultural crops. These compounds affect juvenile stages with additional effects on adult fecundity. This new insecticide family interferes with lipid biosynthesis and are thought to act as inhibitors of acetyl-coenzyme A carboxylase (ACCase) [1], [2] and [3]. Despite their low leachability [4], these compounds may leach through the soil profile. In addition, some of their transformation products, more mobiles as compared to the parent compounds, can be present in the commercial formulations due to degradation process and can be found in surface and groundwater [5] and [6]. Consequently, it is of primary importance to apply remediation strategies such as heterogeneous photocatalysis to polluted waters in order to protect hydric resources.