My little Lilly has bit of an upset tummy at the moment. She's struggling to go and when she does it's little bits of diarrhoea I'm keeping a close eye on her - she's eating, drinking and is her usual self. However my back garden is gravel - I've picked up all her poop and taken half the gravel with it and bagged it and binned it - I'm concerned now about germs and there is still a bit of a smell. Would it be OK if I get some pet friendly disenfectant and wet the garden with it and just leave it to dry? What do you all think is the most effective way of washing down a gravel garden?