https://www.ebay.com/itm/Drop-In-The...IAAOSwDJZfUR7Q
I recently bought this type of trap for use in my pole barn. I know from work at our company, when we leave buckets with water and cooking oil on the floor in our R&D area, mice try to get to cooking oil, fall in and we later find them in the water layer. We don't smell them because the floating oil layer seals gases from percolating out of the bucket.
The ones I bought look more like these in this link: https://www.ebay.com/itm/Walk-The-Pl...kAAOSwum9dO3qz
2004 CiC 6MT Silver Gray (A08) Black Interior 1 of 51 Made
Intravee - Navigation - Back-up Sensors - Cold Weather Package - Home Link Mirror
Winter Hardtop, too - A Sweet Ride