Not something you will be handling with only a pair of gloves (or tongs!)

The fatal flaw in the ad is to buy fuel rods in a 3-pack, while indicating that you use one at a time. It should use 3 rods, replacing the oldest with a fresh one every 2 or 6 months – which depends on the intent of the “for 6 months” claim. (This would depend on the regulatory basis for a short enough half-life to dispose of a source in household trash without concern about release and exposure.)

If the fresh rod goes thru, say, 4 half-lives before another fresh charge, the source rod removed has already gone thru 12 half-lives. :-)

This would have to have a lot of decay heat to do this as an RTG (radioisotope thermoelectric generator - as used on spacecraft and remote locations for beacons, and on the ocean floor to power surveillance equipment, etc.), but there should be alternatives – and some of the heat would be used directly for water, home heating, etc.

There also needs to be ways to levelize home electricity use, including storage – which could be done by storing hydrogen for your vehicle fuel cell in a load-following mode (or your lawnmower or other fuel cell apps) unless the car is total electric; or feed the grid (run your electric meter backwards) like current home solar/wind apps do now; etc. :-)

On another aspect of the ad, I’d think that (at least initially) a service company would come around, like a propane company at my mother’s house, to add the fresh rod and remove the depleted rod, which could even be a neutron-activated source that would go back into a reactor! :-)

[OTOH, we could use Sr-90 (plus Y-90, with beta decay and no gammas) and 4 half-lives would be 120 years :-)]

As such, no one would ever suggest Chernobyl was a model reactor.