Hi Lise,would agree with above posts,know it's not easy especially with you being preggers and having little ones it gets a bit hectic,but try and keep them in one room if poss,and allow them in another in short bursts when it's calmer and your 2 youngest are in bed This way you can supervise them more closely and monitor themThey will still be socialised etc and put the trays near any corners and remove anything soft,we find that kitts like corners and will generally pee/poo on soft furnishings as it soaks up the wee and they either bury the poo or walk away from it but return when caught short,if they wee on something non soft they tend not to like the wetness on their paws,sometimes with lads especially it takes a while longer to litter train them,but persistance and patience will have them loo trained in no timeGood luck,take a breath and keep on the little buggers