My husband had been forgetting the urine on our tomatoes and basil (bit stressed out by the amount of crap on the patio from pigeons nesting under the solar panels - now fenced out and moved elsewhere)

In just two days of added urine, the basil went from yellow and dying, to the leaves turning green again and the whole plant perking up.

The tomato leaves are greening up as well, and I'm hoping they'll produce better flowers now.