I use a combination.  I tend to get a lot of commercial cleaners for free--I will either take them off of Freecycle, or my parents will hand off products that they don't like, don't use, etc.  (I don't like to buy them for a couple of reasons.)

The only exception to that rule is enzyme cleaners for pet stains/odor.  I absolutely NEED to keep that on hand.  Fortunately, I have a little stockpile right now--My mom just gave me several bottles of different brands that did not work for her.  I'll use those until I run out, but I have a brand I like.  (I don't honestly think any of them work all that well, but the one I use is the best I've found--Petzyme.)

I also just started making my own spray cleaner for spot cleaning:  dish soap, water, lavendar oil.  I'm still experimenting with getting it to the point that it doesn't leave as much of a soapy residue.  :S

I also use white vinegar for some things.

Jen M.

I'm the same, but I open the windows a lot in the spring to air out the house.

In my house, cleaning and decluttering are ongoing processes.  If I left it for spring, my house would be a disaster area, and I'd lose momentum, so I keep up routines.

Jen M.

I use their dryer sheets--the lemon verbena.  Very nice!

I have not wanted to spend the money on their other products.  Are they effective, or do they just smell nice?  LOL!

Jen M.

Unforetunately, due to price, they work great, and smell great- The lemon v. is energizing, I think!

Tracy 

It's too hot in the summer for too much activity so I'll really clean everything including emptying closets, washing the ceilings, shampooing carpets and furniture in the fall. I find winter dreary and my energy levels are usually down then so when spring hits I open the windows and deep clean again.