I do quite a bit of domestic drain jetting for a firm, we work on a 60/40 split but its well worth it for me, especially the prices they charge.
I also do a bit of work on a fixed price for another cleaning company.
But it comes in handy when its quiet.
Both companies are great with me and I love to help them out.
I also have a young lad who is a window cleaner, who helps me out when I get busy and we get two machines going and ive lost count of the amount of new window customers he has gained from my work.
I dont think its silly to team up. especially when two companies specialise in two different fields.