Hello _ my rangemaster (modern range style cooker) is filthy - really filthy. I was tempted to call one of those companies who come and clean ovens but my friend just had hers done and it cost £50. I really cant afford that. I bought Oven PRide but now not sure if I can use it. I dont have the instructions for the cooker but I read that not for self cleaning. Help please - my oven is embarrassing . K