Texas Health and Safety Code - HEALTH & SAFETY § 144.024. Treatment of Dead Animals or Renderable Raw Materials

(a) Dead animals or renderable raw materials received by a rendering establishment shall either be immediately placed in the rendering process or stored for not more than 48 hours in a manner that precludes the creation of a nuisance or a malodorous condition.

(b) Cooking or other dehydration operations shall be conducted in a manner that prevents the survival of disease-producing organisms in the processed material.  Adequate and suitable means for the treatment of cooking vapors shall be provided and operated in a manner that controls odors.

(c) All cooked or finished materials shall be kept apart from areas where dead animals or renderable raw materials are kept in a manner that prevents contamination.

(d) If a person intends to use oil or grease as an ingredient in livestock feed or in topical cosmetic products, the person may not contaminate or commingle waste cooking greases or recyclable cooking oils with grease trap waste, grit trap waste, or any other substance that would render the greases or oils harmful or otherwise unsuitable for use as an ingredient in livestock feed or in topical cosmetic products.