I listed some gas gun manufacturers in this next link:http://www.biggerpockets.com/forums/52/topics/80896-converting-apartment-bldg-from-oil-heat-to-nat-gas?

These mostly revolve around manufacture of controlled substances or manufacture or sale while in, or from, public housing. 

Remember for most major manufacturers of battery operated tools, the batteries are interchangeable.

Currently, I only have rental income from renting individual rooms to roommates.Does the statewide rent control apply to the two room renters in my manufactured home?

Obviously if you’re washing before washing you’re using water the manufacturer hasn’t accounted for, that’s not bad science just bad practice.

Obviously that must be an exaggeration, but many of my friends are fighting them and I've heard a few stories of chewed up wires in vehicles because the rats are attracted to a certain type of wire sheathing that some auto manufacturers use.

We rented our double wide manufactured residence for $1000 a month through a rental management company.

Otherwise, they will start manufacturing supposed mold issues or pest issues, and they may even cause damage and then say you're neglecting the property and it's uninhabitable and call the building inspector, etc.So, maybe there's a middle ground. 

I own two manufactured homes on a single parcel.

Its a city with some pretty major crime issues, a decaying manufacturing base etc.in 1970 Stl, Had 622K people, it is at 319K in 2010, and hearing it might drop below 300 in the next census.I just don't think its a place I would want to be investing without being experienced in the city.