Jan : The consumer hand held steam cleaners that most "steamers" use are of a different type ; they vagely resemble a tea pot with an elongated spout and are for sale all over the internet and local stores.
The garmet steamers can be used but with great caution because they spread the heated zone on the LP to the point that some folks have reported warping . The "secret" to the tea pot type is the fact only steam splashes the LP not excessive heat eliminating the warping factor. Now, I'm not saying several steamers haven't been sucessful with garmet steamers only that chances are that warping MAY occur.
As for DIY record cleaning fluids, the internet abounds with formulas. The important factor is water type. Jan, never put the cleaning fluid in the steamer , only "paint" the LP with the fluid. The cleaner the H2O (read reagent type) all the better. If you have not please read the complete thread , lots of important tips are shaired, the do's and don'ts of record cleaning. Also the water threads are important. Kinda like can't go fishing without a rod , line and hook, same thinking applies to record steaming.
Please remember steaming can not remove owner abuse or manufacturing defects that are at times very hearable with a clean recording. All the best