Insect Hotel Welfare and Provision Standards

Insect hotels have become popular garden features, but poorly designed versions provide little genuine welfare benefit. Understanding what makes an effective insect hotel helps focus effort.

Key Facts

Solitary bees use the 5-8mm sized holes in insect hotels for egg-laying and development
Lacewings, ladybirds, and earwigs also use suitable insect hotels for overwintering
Many commercial insect hotels use materials too large or too short to be effective
Pine cone fillings and holes larger than 10mm are primarily decorative rather than functional
Bamboo tubes must be dry, clean, and replaced after 1-2 seasons to prevent disease
Siting in a sunny, south-facing position is essential for effective use

Welfare Considerations

Insect hotel welfare value depends entirely on design and placement. A correctly built insect hotel - with clean bamboo tubes of 3-8mm diameter, at least 15cm depth, in a sunny south-facing position - provides genuine welfare benefit to solitary bees by increasing nesting site availability. A poorly built one with large open cavities, decorative filler, or north-facing placement provides no welfare benefit while creating a false sense of contribution. Replacing tubes annually removes disease and parasite loads. Placing hotels near diverse flowering plants ensures occupying females can find pollen resources for their developing larvae.

What You Can Do

Build your own insect hotel using clean bamboo tubes of correct diameter and depth
Place the hotel in a sunny, south-facing position at least 1 metre from the ground
Replace bamboo tubes annually to prevent disease and parasite accumulation
Supplement with bare earth patches for ground-nesting species that hotels do not serve
Plant native wildflowers near the hotel to provide foraging resources for occupants