[sravfeyn]

Snakes kill rodents that transmit various diseases (mentioned in the article)

[zeveb]

Could domestic animals (e.g. cats & dogs) keep the rodent populations in check? Would they get out of hand?

[tunap]

Perhaps if it was managed properly, ie: spay/neuter before release & replenish the 'supply', as needed. For example, without natural predators the Hawaiian islands are now swarming with feral cats, albeit theirs started as a human problem(abandonment):

https://encrypted.google.com/search?q=hawaii+cat+problem&gbv...