Bug hotel: what actually lives in one, and what a bee hotel does instead

At a glance: who lives where in a bug hotel

Why the mixed design works against itself

A solitary bee inspecting a nest site wants a warm, dry, still tunnel in direct morning sun. A beetle or woodlouse wants cool, shaded, slowly rotting timber. Put both in one frame and the damp layer raises humidity at the dry layer's entrances, encouraging the mould that ruins developing bee larvae. It also gives spiders a shaded ambush point directly across the tunnel openings — cheap bug hotels regularly show webs spun across the bee section within weeks of being hung.

Manufacturers building to a low price also tend to use unsorted garden-centre bamboo — cut through the node at both ends, uneven diameters, sharp rims — because it looks convincing in a product photograph without costing much to source. A female bee investigating that cane finds an open corridor rather than a sealed nest and moves on.

What genuinely does not show up

Despite the marketing on some multi-chamber hotels, you should not expect bumblebees, butterflies or hedgehogs to nest in a wall-mounted timber frame. Bumblebee queens look for an existing cavity near or below ground level; butterflies overwinter as eggs, larvae or pupae on specific host plants, not in a bug hotel chamber; hedgehogs need a much larger, ground-level, insulated box entirely of their own. Being honest about this upfront saves buyers from feeling let down by an empty box in October.

Common mistakes in bug hotel design

• Painted or varnished timber, which smells wrong to a nesting female bee.
• A single drill bit used throughout, limiting the whole hotel to one species at best.
• Thin plastic or felt roofing that splits and lets rain reach the tunnel faces.
• Open backs on the tunnel section, which let parasitic wasps reach larvae from behind.
• Loose fill glued permanently in place, so damp sections cannot be refreshed.

Season by season

Spring and early summer is when red mason bees (Osmia bicornis, flying March to June) inspect and occupy dry tunnels. Leafcutter bees (Megachile species) follow from June to August, sealing cells with neat discs of cut leaf rather than mud. Through autumn and winter, leave the whole structure undisturbed — larvae are developing inside sealed tunnels, and disturbing the frame or moving it indoors can kill them. The loose-fill sections can be topped up or replaced in late autumn once ladybirds have largely settled in for the cold months.

If you want a bug hotel and a bee hotel

There is no conflict in having both — you simply get better results keeping them apart. A rough log pile in a shaded corner, a patch of leaf litter left under a hedge, and a loosely stacked pile of bark do more for beetles and overwintering insects than a crowded timber tower, and cost nothing. That frees up the sunny wall for a bee hotel that does one job well. See our guide to positioning a bee hotel for exactly where that sunny spot should be, and our insect house buying guide if you are choosing between several single-purpose boxes rather than a mixed stack.

What to look for if you buy either

Whichever you choose, check for a spread of tunnel diameters from roughly 2mm to 10mm, untreated timber at least 18mm thick, a projecting weatherproof roof, hand-finished tunnel interiors free of splinters, and a solid rear panel. Those five checks matter more than the number of compartments advertised on the box, and they are the same checks used in our best bee hotel comparison.

The Wild Bee Hotel: the layer that reliably fills, done properly

Rather than stacking six habitats and doing none of them especially well, the Wild Bee Hotel focuses on the one that consistently gets used: hand-sanded tunnels from 2mm to 10mm across multiple tiers, 19mm untreated Western red cedar, a hand-formed copper roof overhanging on every side, a solid rear panel, and a heavy-duty steel mount. £39.99 for one, with multi-packs from £49.99, free worldwide shipping and a 30-day money-back guarantee if the bees do not convince you.