well I used a quart of grape seed oil that expired in 2013 for the bucket trap... (see that garbage I hadn't thrown out comes in handy) 
the video showed putting a quart of peanut oil in the bucket trap...
I had in less than 20 hrs... 2 adult mice dead with 2 young ones sitting on top of the body's shivering
.. no chipmunks
since the oil was rancid I put the young in between 2 other buckets half full of water and drowned them, threw the bodies away... no racid mice for my chickies
In case someone else wants to use this outside , peanut oil would not be a good choice since it turns solid at 37F
Fat Melt/Freeze Point Temperature Monounsaturated Fat % Polyunsaturated Fat % Saturated Fat %
Cottonseed Oil -55F (48C) 18 54 28
Flax Seed Oil -11F (-24C) 21 71 8
Almond Oil 0F (-18C) 73 19 8
Sunflower Oil 1F (-17C) 20 69 11
Safflower Oil 2F (-17C) 14 78 8
Soybean Oil 3F (-16C) 24 61 15
Corn Oil 12F (-11C) 25 61 14
Canola Oil 14F (-10C) 58 35 7
Grapeseed Oil 14F (10C) 57 29 14
Rice Bran Oil 14-23F(-5 to -10C) 38 37 25
Hemp Seed Oil 18F (-8C) 13 63 9
Olive Oil 21F (-6C) 79 8 11
Sesame Oil 21F (-6C) 40 42 14
Peanut Oil 37F (3C) 48 34 18
Palm Kernel Oil 75F (24C) 12 2 86
Coconut Oil 77F (25C) 6 2 92
Cocoa Butter 93-100F (34 to 38C) 20 to 43 0 to 5 57 to 64
Palm Oil 95F (35C)

the video showed putting a quart of peanut oil in the bucket trap...
I had in less than 20 hrs... 2 adult mice dead with 2 young ones sitting on top of the body's shivering

since the oil was rancid I put the young in between 2 other buckets half full of water and drowned them, threw the bodies away... no racid mice for my chickies
In case someone else wants to use this outside , peanut oil would not be a good choice since it turns solid at 37F
Fat Melt/Freeze Point Temperature Monounsaturated Fat % Polyunsaturated Fat % Saturated Fat %
Cottonseed Oil -55F (48C) 18 54 28
Flax Seed Oil -11F (-24C) 21 71 8
Almond Oil 0F (-18C) 73 19 8
Sunflower Oil 1F (-17C) 20 69 11
Safflower Oil 2F (-17C) 14 78 8
Soybean Oil 3F (-16C) 24 61 15
Corn Oil 12F (-11C) 25 61 14
Canola Oil 14F (-10C) 58 35 7
Grapeseed Oil 14F (10C) 57 29 14
Rice Bran Oil 14-23F(-5 to -10C) 38 37 25
Hemp Seed Oil 18F (-8C) 13 63 9
Olive Oil 21F (-6C) 79 8 11
Sesame Oil 21F (-6C) 40 42 14
Peanut Oil 37F (3C) 48 34 18
Palm Kernel Oil 75F (24C) 12 2 86
Coconut Oil 77F (25C) 6 2 92
Cocoa Butter 93-100F (34 to 38C) 20 to 43 0 to 5 57 to 64
Palm Oil 95F (35C)