In a method for removing solids from overspray produced when painting objects, the overspray is absorbed by an air flow and is conducted to a deposition surface, across which a deposition liquid flows and where a large part of at least the solids is transferred into the deposition liquid, is discharged by said deposition liquid, and is removed from the liquid by means of a deposition process. A deposition liquid is used and disclosed which comprises a detackifying medium and an optional suspending fluid, paint overspray particles being detackified using the detackifying medium.