Prep-Deck is a stripper so used to remove stains, oils etc.
Net-Trol is a brighten used after the Prep-Deck, it can be used as a cleaner if you wanted, you adjust the dilution rates etc. If using Prep-Deck you HAVE to use the Net-Trol or similar to neutralise the wood.
For both the above, they are used as part of the cleaning or stripping process so a pressure washer is still used.
The brand of oils we use is Colourtrend.