York spat-r-pruf is designed to prevent any welding spatter that could potentially damage your project our materials surrounding you at the time. It is a non-toxic formula, silicone free, methylene chloride free, and is biodegradable, making it environmentally friendly substance.
Spat-r-pruf from York can be used as a paste, with an aerosol can, or a liquid. The only difference between these distribution systems is how fast you are going to get done proofing your materials. An aerosol can, for example, is going to be quicker applying the substance than a paste would. But it primarily depends on your preference and the type of application you are working on.