Overseeding a lawn

I laid some lawn last Autumn using turf rolls from Rolawn.

It took well before Winter and is generally OK now apart from some bare patches by a retaining wall which I think may have been caused by an accumulation of dead leaves.

Should I 'overseed' the lawn to deal with these bare patches?

The Rolawn site gives instructions for this here
http://www.rolawndirect.co.uk/aftercare-overseeding.html

but the procedure seems fairly involved and I was wondering if it is all necessary as my neighbour thought that it just needed a rake and some seed.

On a side note, I had to clear up several piles of cat poo from the grass. I then applied a product called 'Get Off' to prevent any further fouling, but I'm not overkeen on using something chemical based like this as the lawn will be used by my toddler son to play on. Has anyone had success with this product and can anyone suggest other ways of preventing cats from using the lawn as a litter tray?

Ok great I will give that a try thanks!

I'm very surprised that cats have poo-ed on your lawn as normally they bury it in the soil, preferably newly-dug. I have had cats for years and never had this problem. If it is cats and you know whose they are, I would suggest getting the contents of their litter tray (pooooo...!! ) and empty it where it's ok for them to go, i.e. a small unused soil area, then tell your toddler it's a private area and not to go there. If you rake and re-seed, put some canes around the area with some cheap clematis netting over it about 6" high so it won't be disturbed by people or animals.

Next door's cat regularly poos on our front lawn (we caught it....twice!) Always in the same place. OH clears it up, but unfortunately he has a weak stomach so has to make sure no-one is around as he retches and throws up! i tell him I'll shift it but he insists!

There is nowhere in my gardens that is ok for them to poo!!!!!!!!!! I will continue to try to scare it off when I see it, the dogs do it for me at the back.