from bargain bath mats , kitchen utensils and silly straws , contained at least one hazardous chemical ` above levels of concern ' .
recent study of four major discount retailers in the united states by the ecology centre found that 133 out of 164 products tested , including children 's jewellery , floor mats , plastics and chemicals that have been recalled over the years and studies which have found the levels of industrial chemicals are rising in younger .