We’ve had an email from Andi:

Can I Compost vitamin tablets? I have two jars in date but have gone moist from the air. What can I do with the bottles?

We’ve covered pill bottles already on the site but the vitamin question is a good one – and I’m not sure of the answer. I suspect it might be “best not”. We’re instructed to always dispose of expired medicines very carefully to avoid risk to the public/wild animals, and to avoid contamination of the environment/water supply. While dietary supplements are generally a lot more benign, there is still some risk, for example, iron can be surprisingly toxic to children, and presumably small animals. I’m not suggesting that many children will hunt around in your compost bin for a feast of pills but the payoff doesn’t really seem worth the risk. I may be wrong though.

I’m also not sure if there will be many reuses for them…

Any suggestions for stopping them going soggy in the first place?

We’ve had an email from Chrissy asking what to do with an old doormat:

The bristly kind. Compost it?

The bristly ones are usually made from coir – coconut fibre – so a natural material that will compost — but it can apparently takes many years to decompose. That’s a good thing really – we’d have to replace our doormats more often if they rotted every six months – and it probably would rot down quicker in a warm, moist compost bin than on the doorstep, but possibly one for a long term compost bin rather than a quick turn around one. (Also, be careful if it has rubber or synthetic backing – you might not want that breaking down in your compost bin at all.)

In her short and sweet email, Chrissy doesn’t say why she’s getting rid of it but depending on its condition, it might be reusable in the same or another capacity – if I had a spare doormat right now, no matter how tatty, it would go outside the door to our chicken run so I could wipe my feet on the way out before traipsing back up the garden. Or, I made a wellie stand a few weeks ago and it could easily be fitted out with some stripes of bristly coir to help clean the mud off them first.

Any other reuse suggestions?

Polly has emailed us with a Compost This question:

Can I emptied my hoover bag into my compost bin? I know you can compost dryer lint so wondered if it was the same.

Like with tumble dryer lint, it depends what the lint/dust is most made up of – but most of the time the answer would will be yes. The contents of your vacuum’s bag/canister tends to made up of dirt brought in on shoes (compostable), human/pet hair (compostable), human/pet skin skin cells (compostable) and, depending on how tidy you are when you eat, food crumbs (compostable). Probably the biggest thing to be wary of is if your carpet sheds a lot of fibres – if it’s a synthetic carpet, you don’t want to add that to your compost really but if it’s natural fibre (such as wool), then it’s fine.

You should to take to mix it well into your existing compost – that’ll both add moisture to the dry dust (and help start the composting process) and stop it being a suffocating layer on the top. Because everything is in pretty small particles anyway, some people say you can skip the compost stage and just dump it straight onto your garden – again though, dig it in or the dust will just blow around when you get the slightest breeze.

Any other advice? Or other suggestions?

We’ve had an email from Hayley asking:

Can I compost baked beans? From a tin. We always seem to have some leftover!

Like many composting questions, there is no definitive answer. Some people say it’s fine – they’re vegetables after all, they’ll break down – but other people say don’t do it – the preservatives can upset worms/bacteria in the heap and/or attracted unwanted vermin. If you’ve got a well contained, healthy heap, a few beans won’t ruin it.

Composting though should be a last resort – try to use them first. If you don’t think you’ll use them up within a couple of days in the fridge, you can apparently freeze them (anyone had experience doing that? anything to do/avoid?). You can also add them as filler to soups and casseroles – but if they’re salty ones, remember to adjust your recipe accordingly.

How do you use up your beans?

We’ve had an email from Dani:

You’ve said to avoid composting a lot of lemon peel, what can I do with it instead? There isn’t any juice left, just the tough yellow skin.

You should avoid composting too much of any citrus fruits in one go because it can make the compost overly acidic and when the peel is fresh, can make worms pull little bitter pursed lips faces and you don’t want to annoy your friendly compost worms ;)

You can, perhaps obviously, grated the peel to use as zesty pieces in baking or make candied lemon peel for snacking/cake-decorating.

Around the home, lemon peel is handy for freshening up garbage disposals or dry the skin and use it to add a fragrance to homemade pot pourri.

Any other suggestions?