"Tomatoes can cause tremors and heart arrhythmias. Tomatoe plants and the most toxic, but tomatoes themselves are also unsafe."
One of those things that a little may harm one dog, and a lot, later down the line could harm another dog. Anytime anyone asks about food warnings someone always chimes in with stuff like 'but I've given Dixie grapes every day of her life' you know? Personally I wouldn't chance tomatoes in that quanitity to try to change pee acidity, but it's because food toxins building up in a dog worries me.. that an immediate reaction may not happen, but later down the line, what if it really was causing an issue..
Pee grass burning has become the new hot topic at my house having a female.. I have been told I need to follow her outside when she goes potty with a bucket of water and 'distribute' the pee by washing it out some. So far it's working. It is a pain in my bum though. But thankfully, it's the first pee of the day that is the worst, so if you can deal with the first one, the others are less potent.