My wife picked up on the dishwasher method of canning 10-15 years ago. First thing you do is sterilize the, jars, rings and lids. Second, fill the jars, and give them at least a 1/4" or more of space to the top of the jar. Third, put in the lids and tighten with the rings, be sure to wipe off any excess products if it on on the rim of the jar. Third, we put the jars on the top rack of the dishwasher and then run the pots-n-pans cycle No detegerent)with hi-temp wash/rinse or what ever setting it takes to get the hottest cycle and let the dishwasher run until finished. Sometimes I will just let it run the wash cycle and then cancel the rest of the cycle since the salsa has already been cooked thoroughly all you want is for it to get hot enough for the seals to work. Take them out an let them sit for awhile and you will hear the lids "pop" meaning it is sealed.
I know that this is not the preferred method and extension services from universities do not recommend doing it this way, but since the salsa is already cooked through and has vinegar in it the chances for bacteria are low. I've done bread and butter pickles and jalepenos that way, pepper relish, sweet pickled hot peppers. I don't know if I would recommend doing this method for everything you are canning. Just letting you know the process we take.