Did you buy maternity clothes? Use an OB office? WIC? Those are all sources of your information. Some "well meaning" family members could have signedyou up for their mailing lists too. My family does that all the time b/c we tend to have babies together (my cousin had one in Oct, SIL had one a few weeks ago, other cousin had one Tues and I'm due soonish.) and they know I'll pass the samples and coupons on to them b/c we don't use them. I had them in the house with both boysm actually with my last son and the new baby I'd get a TON of formula for free from a commodity program, even breastfeeding not taking it was not an option. I was never tempted. Some people are, some are not. If it makes you uncomfortable get it out of the house.
DH can give the bbay a bottle if you pump some for him. I did that with both boys and this baby will be getting a lot of pumped milk b/c I go back to school FT (on campus) in Sept.
The formula companies *want* you to keep the samples, they want you to get tired one night and decide to give her "just one bottle" so you can rest or whatever, it does them NO good to support a BF relationship, that doesn't make them any $ and that's what they are after. Do what you feel is best about it, I can have it in my house and never be tempted to use it.