I think there are 3 concurrent threads going on rats and mice. All have a few things in common.....an abundance of vermin caused by rats and mice having access to food, water and shelter. In most cases, solutions offered to date go towards elimination of rats and mice by various means......traps and now snakes? They got that backwards.
Steps to eliminate rats and mice are:
Sanitation -
Exclusion -
Get those two right and 90% plus of all the problems with rats and mice go away. After that, if there are a few stragglers, you move to the final step, which is....
Elimination - traps or poison bait.
Having said that, if the situation allows for it, and you don't mind having them around, snakes, barn cats, skunks, weasels, etc are all good rat and mouse killers, as are fox and coyotes. But except for barn cats, most of those also carry the risk of collateral damage to the birds.
Steps to eliminate rats and mice are:
Sanitation -
Exclusion -
Get those two right and 90% plus of all the problems with rats and mice go away. After that, if there are a few stragglers, you move to the final step, which is....
Elimination - traps or poison bait.
Having said that, if the situation allows for it, and you don't mind having them around, snakes, barn cats, skunks, weasels, etc are all good rat and mouse killers, as are fox and coyotes. But except for barn cats, most of those also carry the risk of collateral damage to the birds.