Update after 2 1/2 years:
I'm still using the same tiny bottle of this blue wonder!  It's caught dozens of mice, mostly on the same trap that is behind the edge of the kitchen stove.  The wonderful thing about this product is that it dries fairly hard, but keeps working.  Even after catching a mouse, and another and another and another, there's still enough there to attract and kill another mouse.  I don't even clean the trap, I just dump the dead guy outside for the stray cats to enjoy (always gone within a few hours) then reset the spring trap and put it in exactly the same place.  Sometimes I get the second mouse the same day!  They travel in pairs, apparently.  This lasts longer than peanut butter, is super simple to use and works miraculously.  Raising its from 4 to 5 stars

Original Review:
The wife saw a large mouse, thought it might be a small rat, but it was just a pregnant mouse.  I loaded 4 traps, 2 with the gel and two with peanut butter.  It took a week, and I thought the mouse must have headed for greener pastures, or was holed up with her babies, but last night we got mommy and daddy, one with the gel bait and one with the peanut butter.  The gel bait on the unsprung trap had dried, so the big gal must have had to work at it and finally sprung the trap.  The smaller mouse had stepped on the trigger.  See the vid I put on the trap review if you like, it's just for proof.
Update after 2 1/2 years:
I'm still using the same tiny bottle of this blue wonder! It's caught dozens of mice, mostly on the same trap that is behind the edge of the kitchen stove. The wonderful thing about this product is that it dries fairly hard, but keeps working. Even after catching a mouse, and another and another and another, there's still enough there to attract and kill another mouse. I don't even clean the trap, I just dump the dead guy outside for the stray cats to enjoy (always gone within a few hours) then reset the spring trap and put it in exactly the same place. Sometimes I get the second mouse the same day! They travel in pairs, apparently. This lasts longer than peanut butter, is super simple to use and works miraculously. Raising its from 4 to 5 stars

Original Review:
The wife saw a large mouse, thought it might be a small rat, but it was just a pregnant mouse. I loaded 4 traps, 2 with the gel and two with peanut butter. It took a week, and I thought the mouse must have headed for greener pastures, or was holed up with her babies, but last night we got mommy and daddy, one with the gel bait and one with the peanut butter. The gel bait on the unsprung trap had dried, so the big gal must have had to work at it and finally sprung the trap. The smaller mouse had stepped on the trigger. See the vid I put on the trap review if you like, it's just for proof.