Hygiene technologies group Byotrol rocketed more than 50% after saying it has inked a potential multi-million pound contract to supply hand hygiene and surface sanitisation products to pest control services provider Rentokil Initial.Byotrol said the four year contract covers a range of products that will be used in Rentokil Initial's service offering in washrooms and kitchens across 16 European countries.The products and services, which are based on the Byotrol technology platform, will be rolled out by Initial starting in the fourth-quarter of 2011, Byotrol said in its statement."Rentokil's ability to deploy the technology into wider markets will significantly extend the number of those brought into contact with Byotrol," Gary Millar, chief executive of Byotrol, said.Shares of Byotrol were 61% higher at 12.90p in early trading session in London.AR