Powder paint hose cleaners (often referred to as foam projectiles or poly plugs) are used to clear residual powder in powder supply lines. By shooting these through your lines with compressed air, you can rapidly change colors without contamination. A top USA supplier, Pest Boys offers these in various bulk quantities and at the lowest prices in the industry. Poly Plugs by Pest Boys are widely sold on eBay and their website with reasonable, not over inflated shipping rates, f