If you want to use chlorine, get netting like it is used for onions, fill it with the bigger chlorine tablets, stick it into the hole as far in as you can, douse it with ammonia and it will turn into chlorine gas (extreme poisonous) it is heavier than air and will go down into the burrow killing everything in its way.
If you want to use chlorine, get netting like it is used for onions, fill it with the bigger chlorine tablets, stick it into the hole as far in as you can, douse it with ammonia and it will turn into chlorine gas (extreme poisonous) it is heavier than air and will go down into the burrow killing everything in its way.