Sleep:
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Chamomile can or the Mega Chamomile can, plus you can try praising them if they go to bed


Babies: If they argue, just keep moving them around a bit until they decide to try. Plus the baby booster shot. I also seem to have some success with the various perfumes and colones from the shop, but don't know if that was just a timing issue or not. I haven't had any success with the baby boost or random trying to make a baby if the parents are over fourty.

Toilets :
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try dropping the peep on the bucket in the laundry room or the wrench area in the workshop on the left wall