Do you use chlorine in your paddling pool ?

[Lardlizard]

?

Nope. no point. My one year old and two year old fill it with mud most days so I normally refill every second day

Is that even a thing? No. You shouldn't use chemicals like that unless you know what you're doing.

I don’t but have considered putting a bit of Milton in. Would the rubber the pools are made of be ok?

You can get a tablet in a dispenser which just floats around the paddling pool and it dissolves over a week to save you emptying it every day.

I use Milton sterilising tablets, not too many though as it's not great for the rubber/plastic