C.K.
It is your landlords responsibility to not only fix the leak but to suck the water from the carpet and clean it after to prevent mold. The carpet will be damp after a cleaning, but it should dry within a day. If it is not, than something is not right, and they should be trying to work with you on fixing the problem. Mold is very dangerous for everyone not just people with allergies. It can cause a myriad of resperatory infections etc. I would take pictures, document all of your requests for fixing the issue, as well as the solutions they have provided including photos and discriptions of what happened after the cleaners left. Put all of this information into a letter which is dated and signed, and send it to your landlord via certified mail so that you have a signature of receipt, requesting a solution and letting them know that you will be staying in a hotel till the problem is fixed and the hotel will be at the landlords expense to which the cost will be taken out of next months rent and give the landlord a copy of the receipt from the hotel (original should stay in your file). Keep a copy of the letter for your own files. Then get out of that apartment. There is no need to put yourself and your boys in any more danger. If the landlord tries to fight you, move, and get a lawyer and recoup all of your costs. (i.e moving, security deposit, hotel accommodations etc...) Just make sure you have EVERYTHING documented, and photographed.