In December 2011 we had an issue with our drains... whilst unblocking it.... sewage spilled out onto the gravel at the front of our house. Over the past year... the weeds got pretty bad - but that said, there we a number of areas where the gravel thickness was thin and semi permeable layer was visible.
So... I have decided to start again... I have lifted all the sones and pulled up the semi permeable layer and relayed new.... I have also ordered new stones which are due for delivery on Monday.
The question I have is what do I do with the old stones??? They are pretty dirty and have moss and weeds etc.... should I junk them and arrange them to be taken away? Should I clean them... if so how? Should I simply put them back and the new gravel on top?
I've thought about using weed killer on them, however with a cat and kids in the house - my wife is not a fan of using weed killer....
Thoughts and any help would me much apprecited. Below is a link to a Google picassa album with all the pictures to bring the problem to life.