PysankyUSA offers the best triple refined wax for your Pysanky use. Each beeswax will perform a different task. If kept clean and in the plastic bag it is shipped in the wax will remain clog free. All of my wax is formulated to go through the finest tips, right up to 3/0. I am sorry I do not produce the string wax, so I can not honestly tell you it is clog free,or stain free, due to the agent used to color it. I stock the product as a courtesy for my customers.. Wax tips: Never gouge your kistka into the block of wax, this will only transfer soot or dirt to a pure wax form. Use a small paring knife to cut pieces from the block, then make little wax bullets using your fingers, store these in a small clean container.with a tight lid. If you prefer to use melted wax to fill your kistka, the La Petite wax melter bought at beauty supply stores works great, it also has a lid.Note on Colorized Waxes. Colorized wax must be stored in their plastic bags. If colorized wax is left unprotected by the plastic bag it is shipped in, it may stain areas it is set on for unprotected prolonged amounts of time.Discoloration to the plastic shipping bag with colorized wax may happen due to the strong colorants used to color the wax.