Police have made nine arrests and recovered 10 stolen caravans during an operation in and around the Royal Welsh Show ground.
Officers worked with trading standards and Customs and Excise on the A470 in the Builth Wells area.
Three of the caravans were recovered off the show site.
Elsewhere, Welsh assembly presiding officer Dafydd Elis-Thomas said some parts of laws outlawing hunting could be overturned with further devolution.
Speaking on the operation to recover stolen caravans, a Dyfed-Powys Police spokeswoman said: "From 6 to 18 July, Powys police have been conducting an operation along the A470 in the immediate area of Builth Wells.
"There has been an excellent response from the public with many people approaching officers and commenting on the reassurance that the operation has given the local community."
In March, police said there had been a spate of caravan thefts in Powys which prompted a warning to owners.
Wednesday's attendance was 59,042 against 64,081 last year
The Campaign for the Protection of Rural Wales launches its John Muir Award partnership
The 101st show comes to an end
Seven throughout the county had been stolen since January, said Dyfed-Powys Police at the time.
Elsewhere at the show on Wednesday, Welsh assembly presiding officer Dafydd Elis-Thomas said the ban on hunting with hounds could be overturned in Wales if the UK government's plans for further devolution became law.
Lord Elis-Thomas said: "There is no reason why in the future some parts of the act banning hunting with dogs should not be devolved to the assembly, with the result that some hunting under licence could be allowed in Wales."
The Wales Office rejected his comments and said that hunting was not devolved and the UK government had no intention of revisiting the issue.
On Monday, the parliamentary Middle Way Group backed a petition calling for the assembly to have extra powers to amend the Hunting Act.
Meanwhile, the Welsh cob championship was won by a 13-year-old stallion owned by Roger Davies and Malcolm Cross from Ebbw Vale on Wednesday.
The grandstand in the main ring was full to capacity, with some visitors queuing for more than two hours to catch a glimpse of the horses.