man,that sucks!! I feel your pain,had the same problem with my boat,peppermint oil,dryer sheets,fresh cab,all of them a joke.
so I built a rodent bucket,heres how,
three to five gallon bucket,two,two inch square holes 180 degrees apart three inches down from lid,and adjacent to handle,drill two 1/8th inch holes through center of favorite beverage can length wise.drill two 1/8th inch holes one hundred eighty degrees apart, perpendicular to buckets handle,
1/8 inch piece of music wire the length of buckets diameter,thread wire through bucket side,can,and out the other side of bucket,you will now have the can on an axle,put a nail through two pieces of lathe,(acting as stop peg) on one end,lathe must be at least long enough to reach ground at a forty five degree angle to the bucket depending on bucket size,about one foot,to two feet long,the nail will prevent lathe from falling out of the bucket when nailed end is placed in bucket holes.
fill bucket one third full of used anti-freeze,or rv anti-freeze,smear beverage can with peanut butter.
mice/rats will climb lathe seeking bait,reach for bait,can rolls with them and they fall into anti-freeze solution drowning quickly due to cold,and energy expenditure to stay warm and afloat.
when full,pull lid and empty dead rodents.
hope that makes sense,it works!!!