Four practical methods of estimating the rate of dust removal by deposition onto surfaces were examined. The most promising for use in occupied livestock buildings involves the measurement of steady-state dust levels under conditions of known rates of dust removal by ventilation or filtration. Practical experience and literature data on dust sedimentation rates suggest that dust deposition in pig buildings could be equivalent to at least spring/autumn ventilation rates, in terms of the rate at which dust is removed from the airspace.