Two-thirds of Americans have told a guest to “make themselves at home” and regretted it later.

That’s according to a new survey of 2,000 general population Americans, which found 72% have told a guest to make the space their own — and 91% of those have regretted it afterward.

Some of the reasons respondents have regretted allowing people to make themselves at home include guests expecting more meals than planned (54%), overstaying their welcome (45%) and making a mess (39%).

Results also looked to see who makes the worst guests, with friends (42%), siblings (39%) and in-laws (37%) topping the list.

For a third of respondents (35%), the situation has become unpleasant enough that they’ve told someone they’re a “bad guest.”

On the flip side, 75% of Americans surveyed believe they’re a good host — with 31% of those saying they’re a “very good” host.

Commissioned by Avocado Green Mattress and conducted by OnePoll, the survey looked at the lengths that hosts go to, and the steps people can take to ensure their home is inviting.

In order to be a good host, over four in 10 have purchased a new bed or new mattress for people to sleep on when they stay the night (49%) or purchased new furniture to ensure guests are comfortable (45%).

And the investment in furniture seems to be well-received, as furniture is one of the first things that respondents notice when entering someone else’s home — after the decor and the general smells or aroma.

“Furniture can be spendy,” said Jessica Hann, Avocado’s Senior Vice President of Brand Marketing and Sustainability. “But the right piece can last generations while making our homes feel like the comfortable and special places they are.”

Respondents also admit to using other people’s homes as inspiration for their own, and 43% have purchased an exact piece — whether that’s art, furniture, etc. — that they first saw while as a guest in someone else’s home.

With that, 60% are more likely to purchase a copy if they know it’s sustainably made.

Two-thirds of Americans surveyed (65%) feel better about having people over when things in their home are sustainable — which might be why 70% are concerned about purchasing sustainable items for their home.

And as a guest, 35% of respondents admit they’ve judged someone else’s home for not being sustainable.

“We handcraft all our furniture in our Los Angeles woodshop from responsibly-sourced wood. We even have a zero-waste line made from upcycled scrap material,” said Hann. “So when it comes to furniture, it’s easy to be sustainable.”