There are expiring ("non-persistent") munitions, though generally they're safed (triggers are deactivated) rather than exploded. The former does leave explosiv

There are expiring ("non-persistent") munitions, though generally they're safed (triggers are deactivated) rather than exploded. The former does leave explosive materials in the field, but makes the likelihood of detonating these much lower. Self-destructing mines are also used, with timers set to explode after deployment. There's some description of these, and problems with them, here: <https://www.fcnl.org/updates/2022-07/understanding-landmines https://www.fcnl.org/updates/2022-07/understanding-landmines>. Other capabilities under the rubric "smart mine" are also possible: <https://en.wikipedia.org/wiki/Smart_mine https://en.wikipedia.org/wiki/Smart_mine>.