I know I am going to get criticised for this but I need advice on how to manage some bad feelings I have to my DSCs (12 and 10) who moved into my house with DP 6 months ago. They are overall good kids but there are certain things that are driving me mad which just don't with my own kids. For example, picking their smelly feet whilst watching TV, bad table manners, not saying please or thank you etc. Nothing major but things that just irriate and with your own kids you would either pick them up on or not care. Is it normal for DSC to grate on your nerves more than your own DCs?