Abstract: The present invention provides a product and method for cleaning or laundering or treatment of fabrics or surfaces, with a liquid cleaning, laundering or treating composition having improved enzyme stability in the presence of an oxidant comprising a) at least one cross-linked hydrolase crystal, or mixture of hydrolase crystals; b) an oxidant, or source of hydrogen peroxide; and c) at least one cleaning, laundering or treating additive, other than an oxidant, wherein the improved stability is due to one or more of the following: (i) where c) includes a surfactant, maintaining the upper limit thereof to no greater than 10% by weight of the composition; (ii) maintaining the pH of the liquid composition between 5 and 8; and (iii) where c) includes surfactants, no more than 20% of the total surfactants is anionic.