Ikea UTRUSTA Electrical Drawer Opener on Kraftmaid Garbage Drawer SERVO-DRIVE Install 302.387.03 

This model doesn't have any "smart" functionality. You have to physically bump it.

@@striker1211 I'd have added the smart myself but thanks for clarifying that :) I am surprised normal push openings aren't available with an analogue like a spring for the full ejection :o Thanks :)

@@clevelandexplorer2221 They are, but energy to load the spring gotta come from somewhere. You'd have to forcefully close it every time.

If they bumped into it with their body or even a heavy tail whip it most certainly will open it. 😂