I'm sorry but it s a bit of a worry if you have dogs,especially those that like to chase things.
Two of our three were worrying a Blue tongued lizard this afternoon until I rescued him by taking him down the land.
I try and make our gardens as snake unfriendly as possible.
No shade,no low growing bushes.
One good tip I've heard is to put bird netting around the bottom of the fences and anywhere a snake could get in quietly.
It's normally Eastern Brown snakes or Red bellied Blacks in this neck of the woods.Both very toxic but usually not aggressive.They will defend themselves though if cornered or suprised.They can be a bit dopey at times.I actually walked on one that thought he was hidden because his head was under a pile of leaves!!

Noise/vibration can discourage them so hopefully the dogs will make a bit of noise.