The vet thinks that Dicky may have Giardia - I have now collected the samples to verify - and all three boys will be starting their pills tonight. The joy.
Anyway, lets assume that that's what one or more of them have and that the pills clear it up. Is there any further precautions I should take for their environment to prevent reinfection? Beyond normal cleaning that is - litter tray and related will be disinfected once the pills are in progress.
Ta.