Unthreaded
GC:
Gas and smoke are very effective when dealing with rabbit burrows, which are larger and much more well-ventilated than mole runs.
The most effective way of dealing with moles are good old scissor-traps, but you have to place them in the main tunnels leading to the brood chamber, not the feeding runs as they will just dig around them.

Pcar
I don't actually use one, or know anyone who does. I think its main use is to inflate tyres after puncture repair when a long way from home (I've had 5 this year 2 in UK 3 in France), road bike tyres are quite vulnerable* and little hand pumps don't get the pressure up to normal levels. One of these devices will inflate to normal pressure in seconds and present no problem in weight and size when out on a bike. Two cartridges can be easily carried in a little under saddle bag along with puncture repair kits, a spare tube and tyre levers.
* Causes of punctures
2 by bramble thorns
2 by pieces of quartz
1 by hitting a pothole and a double pinch puncture resulted.

Likewise.

Ditto.

Rhoda, David Porter: +1

Alan Kendall. You really are a pratt. Your continuing infantile comments on this previously interesting blog are doing immense damage. When you are gone I hope to return. In the meantime I'll look in from time to time.

Sandy,
That CO2 tyre inflator you link to verges on snake oil. It's well known CO2 leaks from tyres very quickly. I discovered this fact in 1979 when I used the beer CO2 to inflate my Motocross bike.
GC,
Did you investigate those plumbers merchant smoke pellets?
For CO2, borrow/hire a cylinder from local pub.

David Porter. Sounds serious. You're not planning a Jonestown are you? There's much to stay for - Trump, Brexit, but perhaps I'm making things worse.

You and me both Rhoda. Time to go to another place.

Winchester Discovery Centre, Monday, July 4, 2016
"Science! What does it really mean to be scientific?"
7:45 PM to 9:15 PM
led by Dr Sylvia McLain from the University of Oxford.