Even if taking the toads is legal:
https://govt.westlaw.com/nycrr/Docum...ta=(sc.Default)
pulling breeding adults from the population will most likely not be perceived by others in a positive light.
It would be far better for the toads if you had a way to harvest eggs or tadpoles, and raise them to feeding size. Perhaps you could design an outdoor enclosure that would allow prey insects in, but keep predators out. This would cause minimal impact to the population, and perhaps even less likelihood of parasites.