How often can you visit BH without being kicked out? I want to start going there more often but it seems like I am constantly getting kicked out.

I don't know. Neither have I ever seen a definitive answer when others have asked.

The person I know who is most successful at BHH restocks says she refreshes until she gets kicked out, waits some time, then goes back in and refreshes until she gets kicked out again. All day long she does this. Other people I know have said they try to refresh every 20 minutes or so.

Thank you. I might try going every 20 minutes or so.

I'm not 100% sure either, but I usually try to check every 15-20 minutes or so as well, when I'm online and remember to. I haven't had a whole lot of success yet, but I'd probably forget completely if I tried it the other way (refreshing a bunch and then checking back later, I'd forget to check back).

You could always try both and see what works better for you, or alternate methods or something.

I have 61 total grabs since the expanded Achievement tiers came out. I check every time I do a Carnival Game so around every twelve minutes. I get kicked out a lot. I think that is just part of it? IME getting kicked out/not getting kicked out doesn't seem to matter over time in terms of how many items I get per week. Either the item is there or it isn't and there's a lot more "isn't" compared to "kick out time".