Once more, the term you want is pH NEUTRAL. You can balance the pH almost anywhere, Citrus Power is a good example which certainly used to have the pH balanced above 13 - which is not what you want.
Bug and tar removal are two totally different topics if you want to do it properly. Bug removal is easily achieved with water based products which can be diluted, mild alkalinity and contact time are your friend. Tar cannot be dealt with this way. Most of the combination products do a very little bit of tar softening and rely on manual work to get it off. If you have any degree of tar contamination, there is not a single water based product on the market which will help. You need to be looking towards a solvent based product. Some of these will be based around mineral spirits like products but the reality is that a proper tar remover has additional ingredients which make them perform better and make them easy to remove (mineral spirits is slow evaporating and not soluble in water - not trivial to get every last bit off after you are done!). As above, these non-polar solvent based products do not have a pH (just because you can stick a pH meter into one and get a reading, does not make it a pH!).
Summary is that there is really nothing which fits the request. Bugs, possibly but tar, no.
