Four Central European countries urged the EU on September 26 to thoroughly inspect the so-called "solidarity corridors" through which Ukrainian grain passes on its way to third countries. Agricultural ministry officials from the Czech Republic, Hungary, Poland, and Slovakia said part of the transported grain stays in countries such as Poland, and harms local farmers as it is much cheaper than local grain. Czech Agriculture Minister Marek Vyborny said that, to prevent grain leaks during transport, the EU could introduce refundable deposits for dealers. Ukrainian Agriculture Minister Mykola Solsky joined the meeting via a video link.