I'm toggling my dod_sandbags on/off when the wall they are against is destroyed by targeting the dod_sandbag with killtarget from a trigger_rely. This successfully kills the sandbag BUT it does not reset at the end of the round. All my other entities reset no problem. Is there a better way to turn the sandbag off during a round?

Don't use the 'killtarget' property of the trigger_relay, but the 'Target' property.
This is an example of sandbags destroyable with a bazooka. Adapt it to your wall.

Great. Thanks.

EDIT: Cool little demo map of sandbags - fixed my problem in a jiffy. Much appreciated.