Crawford's Free Spackling Paste is a multi-purpose, premixed, ready-to-use vinyl resin-based patching compound for many interior and exterior applications. Crawford s Free contains no mercury, asbestos, asbestos-like fibers, tin, formaldehyde, heavy metal biocides or fungicides. Crawford's Free is also non-toxic when used as directed and hypoallergenic to the majority of the population. Ready-to-use. Easily fills cracks, holes and dents in one application. Will not shrink, crack or sag. Does not require sanding and may be painted within minutes.