This document explores the potentialities of risk reduction, from activities of remediation in construction, developped at small scale by professionals or individuals on targets like moulds, rots, termites and other wood destroying insects, with products distributed for professional or do-it-yourself purposes. At the first stage, an inventory of the type / interest of products / processes is carried out, with the identification of the sequences, including the fate of wastes and the resulting exposure for the compartments of interest. For health aspects, a crude practical evaluation of the exposure of direct receptors, operators, and indirect ones, inhabitants and the public in the vicinity, to the pathologies and their remediation, seems possible. This exercise aims to provide the users of products with the minimum set of tools and criteria of direct exposure assessment, prior to their use, based on available documentation, regulation and warnings. The best case occurs with the access to material safety data sheets and the corresponding labelling. Per default, they take available products from the shelf (approved for marketing or restricted use, doses, conditions of application), with the support of suppliers and local requirements. Regular training is one way of progress, the obligation of result with procedures adapted to the site of the building and its own exposure, another route of improvement. As works in this field are often non typical, there is still room for the optimisation of individual options, based on experience, to locate the necessary dose and performance at the right place. Description and examples are provided.

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