Black Limestone sealer

This question was asked by – Ed Hi, i have just had a bradstone natural blue/black limestone patio laid, approx 15m2. We have two small dogs that regularly wee on the patio and i am looking for advice on what is best to seal/protect the stones and also wash them. I have put a link below to a suitable product for your paving. Stone & Slate Protector (SSP) Drew...