The present invention relates to the field of deodorizers. More particularly, embodiments of the invention include plasticized cellulosic materials impregnated with zinc ricinoleate and in the form of replaceable hang tags and/or deodorizer inserts useful for suppressing, treating, or preventing offensive and/or undesirable odors. Particular embodiments of the invention include a solid plastic biodegradable deodorizer composition comprising: a cellulose acetate based substrate having at least 96% biodegradability and a malodor neutralizer capable of forming a complex with one or more nitrogen- or sulfur-containing compounds and chosen from zinc ricinoleate, zinc chloride, zinc gluconate, zinc lactate, zinc maleate, zinc salicylate, zinc sulfate, and mixtures thereof, which is impregnated into the substrate up to approximately 20% of the weight of the substrate. A common object of embodiments is to treat, reduce, or eliminate offensive odors and more specifically can include deodorant and odor controlling devices to reduce or eliminate unwanted pet odors.
