Hi thanks for the replies. Tumbling wont work, we tumble them all on low anyway so if it was going to help it would have done so by now (we've always tumbled so that's not the cause).
I will look into getting some of the tent spray, we've decided to swap to terrys/shaped nappies anyway so if i can fix the pockets i'll be selling them for cheap (mainly ebay cheapies).
mollycoddles i know what you mean about the delaminating, by really cheap £2 ebays from china (Babyland) have done this, they were till waterproof until recently. Thanks for your concern for my OH, the accident (cement burns to knees and lower legs) was over 2 monthsago now and his skin grafts have healed nicely, he's very scarred and still needs physio but he still has his legs- thats the important bit!
Oh and no i dont soak anything thats waterproof, we may start soaking the terries though as theyre getting very stained with toddler/newborn milk poo