This exclusion typically excludes claims relating to the discharge or release of ‘pollutants’. The language of this exclusion will differ policy to policy and the decision as to whether any substance released, discharged or dispersed by an insured can be defined as a pollutant will be a matter for interpretation. Other factors to consider will be if the language in the exclusion is the ‘absolute’ version or the softer ‘for’ language version or if the exclusion provides securities or non-indemnifiable claims carve-backs. It is, however, worth noting however that on a D&O policy, loss will not extend to clean up costs.