Remove solid waste into toilet (sprayer, dedicated spatulas, or liners are useful). If baby is exclusively breastfed, waste is water soluble and can be rinsed in the sink or put straight into the washing machine – note that leaving poop inside the nappy for longer periods can result in staining.
Rinse nappies in cold water, store in dry pail with adequate ventilation/airflow until prewash. This is very important to prevent mould and ammonia build up.
Prewash every 1-2 days on short cycle with half detergent and return to pail.