Tiny little bits I guess. Unless it's from the poo in the bath cat. Then it's just loo roll. It's an old house with plumbing to match so we can't use wipes etc.
Litter trays are in the spare bathroom so we've always flushed the poo down the loo. They mostly go outside anyway
I accept that I've never been aware of any risk with flushing away feline faeces!
Rats and other rodents live in sewers and are riddled with diseases like weils disease. But we don't get infected via water. Cow shit is often washed into rivers and streams and that can contain toxins.
Human faeces is full of stuff like giardiasis.
Surely environmentally using single use plastic bags is not great. And as toxoplasmosis can live in soil for months thus getting into groundwater anyway, I'm not sure that throwing in into landfill is any better
I can't find anything to link risk of toxoplasmosis to UK drinking water so I think I'll keep flushing.