You can try the following cleaning solutions; muriatic acid, bleach solution and battery solution.
The easiest way is to build a pool with a ladder to go with it. Then, have your sim get in to the pool using the ladder. When your sim is comfortably swimming, remove the ladder. That way, that cannot get out. Fast forward the time, and eventually your sim will drown and die.
Ladder's are very important in a swimming pool. If you don't have a ladder, people can get hurt. If there is an emergency and someone needs help, it would take a while for the person to get help.
If ladder is metal, you'll have to go back to no salt pool. :(
you have to buy a ladder(go to build mode, miscelaneous ,pool and there are a few stuff for your pool)but if you have the ladder you just have to cancel this action.
make your sim go in the pool then go into buy mode and remove the ladder the sim will not be able to get out and their energy levels will go down and they will eventually drown
Most likely you can remove cement from the S. S. ladder with a mild solution of muriatic acid. Ken
The best place to purchase a pool ladder would be a specialized pool store. However, they can also be found at WalMart and Sears, as well as online at Amazon.
Contract a pool contractor to refab your pool. Will cost you extra for removal, but leave it to the professionals. Get multi bids from big and small companies. Never give a huge deposit up front.
If it is an above ground yes
Build a pool with a ladder. When the sims is in the pool take away the ladder. Wait until the energy bar crops really low and they will drown
Usually there is a ladder on the side, or steps leading down into the pool. Enter that way and you'll be safe. :)
If it's true stainless steel and not a coating, then yes, you can paint a pool ladder with an oil based enamel paint.