Posted: 24/06/2012 at 11:58
Hi... I take it that the dogs are Bitches. Bitches urine has an scorching effect on lawns. Your problem is very annoying & frusitrating because so little can really be done to prevent or even cure it. There isn't any effective repellants on the market and waving goodbye to dogs is totally out of the question and is not really a suggestion..
The only thing I would be suggest is get some lawn sand or some a conditioner product which is high in nitrogen - And treat the whole lawn.
Or just water the patch copiously. If the brown patch area remains an eyesore, I would then look into re-seeding or turfing.
Hope this helps best of luck!
(ps my neighbour has the same problem the worse of it all is- it isnt even his dog - only occurs when the grandson appears his dog...)