I think the problem is at the moment there is A lot of resistance from different rodenticides so they are becoming less effective and there is nothing to take its place as nobody wants to use a stronger rodenticide outside due to secondary poisoning, so with all the red tape and rodenticides which are not working as good as they use too something is going to need to change either go back to trapping which will be a timely job which means more expenses or to find an new active ingredients which will kill rats but has a less hazard to secondary poisoning, will trapping alone be enough to keep o