Housekeeping in wood manufacturing facilities such as pellet manufacturing plants traditionally has not had the priority it deserves for a number or reasons. The issue of cleaning has a connotation of lesser significance than keeping a plant operating and producing revenue generating products. Cleaning of floors is a nuisance since the generation of dust never stops but it is as important as regular maintenance of machinery. This document describes a methodology for evaluating how much dust on floors, girders and beams is acceptable in order to stay within reasonable margins of safety. Several guidelines are published on this subject but are not necessarily accessible without substantial effort. Also, these guidelines are not always adapted to the characteristics of the type of dust encountered in pellet plants. Based on lab testing of a couple of fundamental parametric values related to the specific characteristics of the dust the method described will allow the operator of a pellet plant to evaluate the necessary safety precautions which needs to be taken as it relates to housekeeping.